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Finding the Fourth Proportional to 625,428.63, 863,092.17 and 338,948.64

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Solution

The fourth proportional to 625,428.63, 863,092.17 and 338,948.64 is: 467,749.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,428.63 : 863,092.17 = 338,948.64 : x
  2. Step 2: Convert to fraction form
    625,428.63/863,092.17 = 338,948.64/x
  3. Step 3: Cross multiply
    625,428.63x = 863,092.17 × 338,948.64
  4. Step 4: Simplify right side
    625,428.63x = 292,543,917,216.15
  5. Step 5: Solve for x
    x = 292,543,917,216.15/625,428.63
  6. Step 6: Final answer
    x = 467,749.48

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1.5x scale

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.