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Finding the Fourth Proportional to 666,851.86, 999,543.90 and 329,392.90

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Solution

The fourth proportional to 666,851.86, 999,543.90 and 329,392.90 is: 493,726.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,851.86 : 999,543.90 = 329,392.90 : x
  2. Step 2: Convert to fraction form
    666,851.86/999,543.90 = 329,392.90/x
  3. Step 3: Cross multiply
    666,851.86x = 999,543.90 × 329,392.90
  4. Step 4: Simplify right side
    666,851.86x = 329,242,663,898.31
  5. Step 5: Solve for x
    x = 329,242,663,898.31/666,851.86
  6. Step 6: Final answer
    x = 493,726.84

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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.