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Finding the Fourth Proportional to 656,591.70, 984,304.35 and 390,069.30

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Solution

The fourth proportional to 656,591.70, 984,304.35 and 390,069.30 is: 584,757.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,591.70 : 984,304.35 = 390,069.30 : x
  2. Step 2: Convert to fraction form
    656,591.70/984,304.35 = 390,069.30/x
  3. Step 3: Cross multiply
    656,591.70x = 984,304.35 × 390,069.30
  4. Step 4: Simplify right side
    656,591.70x = 383,946,908,791.46
  5. Step 5: Solve for x
    x = 383,946,908,791.46/656,591.70
  6. Step 6: Final answer
    x = 584,757.48

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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.