Home / 811,472.10-1,217,318.92-338,046.74

Finding the Fourth Proportional to 811,472.10, 1,217,318.92 and 338,046.74

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Solution

The fourth proportional to 811,472.10, 1,217,318.92 and 338,046.74 is: 507,116.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,472.10 : 1,217,318.92 = 338,046.74 : x
  2. Step 2: Convert to fraction form
    811,472.10/1,217,318.92 = 338,046.74/x
  3. Step 3: Cross multiply
    811,472.10x = 1,217,318.92 × 338,046.74
  4. Step 4: Simplify right side
    811,472.10x = 411,510,694,644.50
  5. Step 5: Solve for x
    x = 411,510,694,644.50/811,472.10
  6. Step 6: Final answer
    x = 507,116.26

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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.