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Finding the Fourth Proportional to 573,840.28, 791,868.18 and 315,712.36

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Solution

The fourth proportional to 573,840.28, 791,868.18 and 315,712.36 is: 435,665.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,840.28 : 791,868.18 = 315,712.36 : x
  2. Step 2: Convert to fraction form
    573,840.28/791,868.18 = 315,712.36/x
  3. Step 3: Cross multiply
    573,840.28x = 791,868.18 × 315,712.36
  4. Step 4: Simplify right side
    573,840.28x = 250,002,571,916.71
  5. Step 5: Solve for x
    x = 250,002,571,916.71/573,840.28
  6. Step 6: Final answer
    x = 435,665.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.