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Finding the Fourth Proportional to 573,908.40, 861,016.20 and 512,007.60

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Solution

The fourth proportional to 573,908.40, 861,016.20 and 512,007.60 is: 768,148.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,908.40 : 861,016.20 = 512,007.60 : x
  2. Step 2: Convert to fraction form
    573,908.40/861,016.20 = 512,007.60/x
  3. Step 3: Cross multiply
    573,908.40x = 861,016.20 × 512,007.60
  4. Step 4: Simplify right side
    573,908.40x = 440,846,838,123.12
  5. Step 5: Solve for x
    x = 440,846,838,123.12/573,908.40
  6. Step 6: Final answer
    x = 768,148.43

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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.