Home / 811,471.85-1,217,318.54-338,046.49

Finding the Fourth Proportional to 811,471.85, 1,217,318.54 and 338,046.49

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Solution

The fourth proportional to 811,471.85, 1,217,318.54 and 338,046.49 is: 507,115.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,471.85 : 1,217,318.54 = 338,046.49 : x
  2. Step 2: Convert to fraction form
    811,471.85/1,217,318.54 = 338,046.49/x
  3. Step 3: Cross multiply
    811,471.85x = 1,217,318.54 × 338,046.49
  4. Step 4: Simplify right side
    811,471.85x = 411,510,264,308.16
  5. Step 5: Solve for x
    x = 411,510,264,308.16/811,471.85
  6. Step 6: Final answer
    x = 507,115.88

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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.