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Finding the Fourth Proportional to 676,875.86, 934,114.56 and 386,534.80

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Solution

The fourth proportional to 676,875.86, 934,114.56 and 386,534.80 is: 533,432.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,875.86 : 934,114.56 = 386,534.80 : x
  2. Step 2: Convert to fraction form
    676,875.86/934,114.56 = 386,534.80/x
  3. Step 3: Cross multiply
    676,875.86x = 934,114.56 × 386,534.80
  4. Step 4: Simplify right side
    676,875.86x = 361,067,784,626.69
  5. Step 5: Solve for x
    x = 361,067,784,626.69/676,875.86
  6. Step 6: Final answer
    x = 533,432.80

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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.