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Finding the Fourth Proportional to 429,523.20, 642,972.60 and 335,044.80

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Solution

The fourth proportional to 429,523.20, 642,972.60 and 335,044.80 is: 501,543.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,523.20 : 642,972.60 = 335,044.80 : x
  2. Step 2: Convert to fraction form
    429,523.20/642,972.60 = 335,044.80/x
  3. Step 3: Cross multiply
    429,523.20x = 642,972.60 × 335,044.80
  4. Step 4: Simplify right side
    429,523.20x = 215,424,626,172.48
  5. Step 5: Solve for x
    x = 215,424,626,172.48/429,523.20
  6. Step 6: Final answer
    x = 501,543.63

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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.