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Finding the Fourth Proportional to 486,041.10, 729,061.65 and 438,801.90

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Solution

The fourth proportional to 486,041.10, 729,061.65 and 438,801.90 is: 658,202.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,041.10 : 729,061.65 = 438,801.90 : x
  2. Step 2: Convert to fraction form
    486,041.10/729,061.65 = 438,801.90/x
  3. Step 3: Cross multiply
    486,041.10x = 729,061.65 × 438,801.90
  4. Step 4: Simplify right side
    486,041.10x = 319,913,637,237.14
  5. Step 5: Solve for x
    x = 319,913,637,237.14/486,041.10
  6. Step 6: Final answer
    x = 658,202.85

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Similar ratio
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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.