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Finding the Fourth Proportional to 573,143.20, 857,673.60 and 499,076.80

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Solution

The fourth proportional to 573,143.20, 857,673.60 and 499,076.80 is: 746,837.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,143.20 : 857,673.60 = 499,076.80 : x
  2. Step 2: Convert to fraction form
    573,143.20/857,673.60 = 499,076.80/x
  3. Step 3: Cross multiply
    573,143.20x = 857,673.60 × 499,076.80
  4. Step 4: Simplify right side
    573,143.20x = 428,044,995,732.48
  5. Step 5: Solve for x
    x = 428,044,995,732.48/573,143.20
  6. Step 6: Final answer
    x = 746,837.78

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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.