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Finding the Fourth Proportional to 625,863.39, 938,911.95 and 284,330.79

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Solution

The fourth proportional to 625,863.39, 938,911.95 and 284,330.79 is: 426,549.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,863.39 : 938,911.95 = 284,330.79 : x
  2. Step 2: Convert to fraction form
    625,863.39/938,911.95 = 284,330.79/x
  3. Step 3: Cross multiply
    625,863.39x = 938,911.95 × 284,330.79
  4. Step 4: Simplify right side
    625,863.39x = 266,961,576,483.94
  5. Step 5: Solve for x
    x = 266,961,576,483.94/625,863.39
  6. Step 6: Final answer
    x = 426,549.28

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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.