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Finding the Fourth Proportional to 573,839.28, 791,866.80 and 315,711.36

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Solution

The fourth proportional to 573,839.28, 791,866.80 and 315,711.36 is: 435,664.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,839.28 : 791,866.80 = 315,711.36 : x
  2. Step 2: Convert to fraction form
    573,839.28/791,866.80 = 315,711.36/x
  3. Step 3: Cross multiply
    573,839.28x = 791,866.80 × 315,711.36
  4. Step 4: Simplify right side
    573,839.28x = 250,001,344,366.85
  5. Step 5: Solve for x
    x = 250,001,344,366.85/573,839.28
  6. Step 6: Final answer
    x = 435,664.40

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1.5x scale

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.