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Finding the Fourth Proportional to 656,470.40, 984,532.80 and 207,190.40

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Solution

The fourth proportional to 656,470.40, 984,532.80 and 207,190.40 is: 310,731.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,470.40 : 984,532.80 = 207,190.40 : x
  2. Step 2: Convert to fraction form
    656,470.40/984,532.80 = 207,190.40/x
  3. Step 3: Cross multiply
    656,470.40x = 984,532.80 × 207,190.40
  4. Step 4: Simplify right side
    656,470.40x = 203,985,744,645.12
  5. Step 5: Solve for x
    x = 203,985,744,645.12/656,470.40
  6. Step 6: Final answer
    x = 310,731.06

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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.