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Finding the Fourth Proportional to 618,785.28, 853,871.52 and 343,151.04

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Solution

The fourth proportional to 618,785.28, 853,871.52 and 343,151.04 is: 473,519.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,785.28 : 853,871.52 = 343,151.04 : x
  2. Step 2: Convert to fraction form
    618,785.28/853,871.52 = 343,151.04/x
  3. Step 3: Cross multiply
    618,785.28x = 853,871.52 × 343,151.04
  4. Step 4: Simplify right side
    618,785.28x = 293,006,900,114.38
  5. Step 5: Solve for x
    x = 293,006,900,114.38/618,785.28
  6. Step 6: Final answer
    x = 473,519.51

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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.