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Finding the Fourth Proportional to 625,731.76, 863,456.68 and 353,761.90

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Solution

The fourth proportional to 625,731.76, 863,456.68 and 353,761.90 is: 488,161.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,731.76 : 863,456.68 = 353,761.90 : x
  2. Step 2: Convert to fraction form
    625,731.76/863,456.68 = 353,761.90/x
  3. Step 3: Cross multiply
    625,731.76x = 863,456.68 × 353,761.90
  4. Step 4: Simplify right side
    625,731.76x = 305,458,075,684.49
  5. Step 5: Solve for x
    x = 305,458,075,684.49/625,731.76
  6. Step 6: Final answer
    x = 488,161.37

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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.