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Finding the Fourth Proportional to 478,685.90, 717,044.70 and 329,095.10

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Solution

The fourth proportional to 478,685.90, 717,044.70 and 329,095.10 is: 492,966.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,685.90 : 717,044.70 = 329,095.10 : x
  2. Step 2: Convert to fraction form
    478,685.90/717,044.70 = 329,095.10/x
  3. Step 3: Cross multiply
    478,685.90x = 717,044.70 × 329,095.10
  4. Step 4: Simplify right side
    478,685.90x = 235,975,897,250.97
  5. Step 5: Solve for x
    x = 235,975,897,250.97/478,685.90
  6. Step 6: Final answer
    x = 492,966.05

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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.