Home / 765,421.38-1,148,391.57-338,898.47

Finding the Fourth Proportional to 765,421.38, 1,148,391.57 and 338,898.47

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Solution

The fourth proportional to 765,421.38, 1,148,391.57 and 338,898.47 is: 508,462.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,421.38 : 1,148,391.57 = 338,898.47 : x
  2. Step 2: Convert to fraction form
    765,421.38/1,148,391.57 = 338,898.47/x
  3. Step 3: Cross multiply
    765,421.38x = 1,148,391.57 × 338,898.47
  4. Step 4: Simplify right side
    765,421.38x = 389,188,146,033.90
  5. Step 5: Solve for x
    x = 389,188,146,033.90/765,421.38
  6. Step 6: Final answer
    x = 508,462.60

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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.