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Finding the Fourth Proportional to 625,330.48, 938,013.24 and 389,354.80

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Solution

The fourth proportional to 625,330.48, 938,013.24 and 389,354.80 is: 584,043.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,330.48 : 938,013.24 = 389,354.80 : x
  2. Step 2: Convert to fraction form
    625,330.48/938,013.24 = 389,354.80/x
  3. Step 3: Cross multiply
    625,330.48x = 938,013.24 × 389,354.80
  4. Step 4: Simplify right side
    625,330.48x = 365,219,957,457.55
  5. Step 5: Solve for x
    x = 365,219,957,457.55/625,330.48
  6. Step 6: Final answer
    x = 584,043.11

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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.