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Finding the Fourth Proportional to 463,428.80, 695,143.20 and 413,565.20

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Solution

The fourth proportional to 463,428.80, 695,143.20 and 413,565.20 is: 620,347.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,428.80 : 695,143.20 = 413,565.20 : x
  2. Step 2: Convert to fraction form
    463,428.80/695,143.20 = 413,565.20/x
  3. Step 3: Cross multiply
    463,428.80x = 695,143.20 × 413,565.20
  4. Step 4: Simplify right side
    463,428.80x = 287,487,036,536.64
  5. Step 5: Solve for x
    x = 287,487,036,536.64/463,428.80
  6. Step 6: Final answer
    x = 620,347.80

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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.