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Finding the Fourth Proportional to 628,114.52, 866,512.14 and 373,320.92

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Solution

The fourth proportional to 628,114.52, 866,512.14 and 373,320.92 is: 515,012.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,114.52 : 866,512.14 = 373,320.92 : x
  2. Step 2: Convert to fraction form
    628,114.52/866,512.14 = 373,320.92/x
  3. Step 3: Cross multiply
    628,114.52x = 866,512.14 × 373,320.92
  4. Step 4: Simplify right side
    628,114.52x = 323,487,109,295.97
  5. Step 5: Solve for x
    x = 323,487,109,295.97/628,114.52
  6. Step 6: Final answer
    x = 515,012.95

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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.