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Finding the Fourth Proportional to 443,398.38, 607,458.05 and 426,793.28

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Solution

The fourth proportional to 443,398.38, 607,458.05 and 426,793.28 is: 584,708.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,398.38 : 607,458.05 = 426,793.28 : x
  2. Step 2: Convert to fraction form
    443,398.38/607,458.05 = 426,793.28/x
  3. Step 3: Cross multiply
    443,398.38x = 607,458.05 × 426,793.28
  4. Step 4: Simplify right side
    443,398.38x = 259,259,013,621.90
  5. Step 5: Solve for x
    x = 259,259,013,621.90/443,398.38
  6. Step 6: Final answer
    x = 584,708.98

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.