Home / 724,340.10-999,540.86-438,018.06

Finding the Fourth Proportional to 724,340.10, 999,540.86 and 438,018.06

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Solution

The fourth proportional to 724,340.10, 999,540.86 and 438,018.06 is: 604,435.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,340.10 : 999,540.86 = 438,018.06 : x
  2. Step 2: Convert to fraction form
    724,340.10/999,540.86 = 438,018.06/x
  3. Step 3: Cross multiply
    724,340.10x = 999,540.86 × 438,018.06
  4. Step 4: Simplify right side
    724,340.10x = 437,816,948,387.93
  5. Step 5: Solve for x
    x = 437,816,948,387.93/724,340.10
  6. Step 6: Final answer
    x = 604,435.61

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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.