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Finding the Fourth Proportional to 573,455.28, 791,388.56 and 315,351.88

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Solution

The fourth proportional to 573,455.28, 791,388.56 and 315,351.88 is: 435,196.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,455.28 : 791,388.56 = 315,351.88 : x
  2. Step 2: Convert to fraction form
    573,455.28/791,388.56 = 315,351.88/x
  3. Step 3: Cross multiply
    573,455.28x = 791,388.56 × 315,351.88
  4. Step 4: Simplify right side
    573,455.28x = 249,565,870,206.49
  5. Step 5: Solve for x
    x = 249,565,870,206.49/573,455.28
  6. Step 6: Final answer
    x = 435,196.74

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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.