Home / 747,687.40-1,121,531.10-432,759.40

Finding the Fourth Proportional to 747,687.40, 1,121,531.10 and 432,759.40

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Solution

The fourth proportional to 747,687.40, 1,121,531.10 and 432,759.40 is: 649,139.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,687.40 : 1,121,531.10 = 432,759.40 : x
  2. Step 2: Convert to fraction form
    747,687.40/1,121,531.10 = 432,759.40/x
  3. Step 3: Cross multiply
    747,687.40x = 1,121,531.10 × 432,759.40
  4. Step 4: Simplify right side
    747,687.40x = 485,353,125,917.34
  5. Step 5: Solve for x
    x = 485,353,125,917.34/747,687.40
  6. Step 6: Final answer
    x = 649,139.10

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Half scale
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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.