Home / 2,565,789,908.19-3,540,790,103.54-1,392,368,180.19

Finding the Fourth Proportional to 2,565,789,908.19, 3,540,790,103.54 and 1,392,368,180.19

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Solution

The fourth proportional to 2,565,789,908.19, 3,540,790,103.54 and 1,392,368,180.19 is: 1,921,468,105.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,565,789,908.19 : 3,540,790,103.54 = 1,392,368,180.19 : x
  2. Step 2: Convert to fraction form
    2,565,789,908.19/3,540,790,103.54 = 1,392,368,180.19/x
  3. Step 3: Cross multiply
    2,565,789,908.19x = 3,540,790,103.54 × 1,392,368,180.19
  4. Step 4: Simplify right side
    2,565,789,908.19x = 4,930,083,472,893,789,184
  5. Step 5: Solve for x
    x = 4,930,083,472,893,789,184/2,565,789,908.19
  6. Step 6: Final answer
    x = 1,921,468,105.07

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Half scale
Find fourth proportional to 5,131,579,816.38, 7,081,580,207.07 and 2,784,736,360.38
Double scale
Find fourth proportional to 2,565,789,909.19, 3,540,790,104.92 and 1,392,368,181.19
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.