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Finding the Fourth Proportional to 573,916.40, 861,028.20 and 512,015.60

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Solution

The fourth proportional to 573,916.40, 861,028.20 and 512,015.60 is: 768,160.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,916.40 : 861,028.20 = 512,015.60 : x
  2. Step 2: Convert to fraction form
    573,916.40/861,028.20 = 512,015.60/x
  3. Step 3: Cross multiply
    573,916.40x = 861,028.20 × 512,015.60
  4. Step 4: Simplify right side
    573,916.40x = 440,859,870,439.92
  5. Step 5: Solve for x
    x = 440,859,870,439.92/573,916.40
  6. Step 6: Final answer
    x = 768,160.43

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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.