Home / 911,009.40-1,366,514.10-279,922.20

Finding the Fourth Proportional to 911,009.40, 1,366,514.10 and 279,922.20

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Solution

The fourth proportional to 911,009.40, 1,366,514.10 and 279,922.20 is: 419,883.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,009.40 : 1,366,514.10 = 279,922.20 : x
  2. Step 2: Convert to fraction form
    911,009.40/1,366,514.10 = 279,922.20/x
  3. Step 3: Cross multiply
    911,009.40x = 1,366,514.10 × 279,922.20
  4. Step 4: Simplify right side
    911,009.40x = 382,517,633,203.02
  5. Step 5: Solve for x
    x = 382,517,633,203.02/911,009.40
  6. Step 6: Final answer
    x = 419,883.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.