Home / 1,088,139.20-1,632,208.80-289,419.20

Finding the Fourth Proportional to 1,088,139.20, 1,632,208.80 and 289,419.20

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Solution

The fourth proportional to 1,088,139.20, 1,632,208.80 and 289,419.20 is: 434,128.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,088,139.20 : 1,632,208.80 = 289,419.20 : x
  2. Step 2: Convert to fraction form
    1,088,139.20/1,632,208.80 = 289,419.20/x
  3. Step 3: Cross multiply
    1,088,139.20x = 1,632,208.80 × 289,419.20
  4. Step 4: Simplify right side
    1,088,139.20x = 472,392,565,128.96
  5. Step 5: Solve for x
    x = 472,392,565,128.96/1,088,139.20
  6. Step 6: Final answer
    x = 434,128.80

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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.