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Finding the Fourth Proportional to 938,395.38, 1,294,149.48 and 731,715

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Solution

The fourth proportional to 938,395.38, 1,294,149.48 and 731,715 is: 1,009,114.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,395.38 : 1,294,149.48 = 731,715 : x
  2. Step 2: Convert to fraction form
    938,395.38/1,294,149.48 = 731,715/x
  3. Step 3: Cross multiply
    938,395.38x = 1,294,149.48 × 731,715
  4. Step 4: Simplify right side
    938,395.38x = 946,948,586,758.20
  5. Step 5: Solve for x
    x = 946,948,586,758.20/938,395.38
  6. Step 6: Final answer
    x = 1,009,114.72

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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.