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Finding the Fourth Proportional to 661,540.20, 992,310.30 and 656,010.60

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Solution

The fourth proportional to 661,540.20, 992,310.30 and 656,010.60 is: 984,015.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,540.20 : 992,310.30 = 656,010.60 : x
  2. Step 2: Convert to fraction form
    661,540.20/992,310.30 = 656,010.60/x
  3. Step 3: Cross multiply
    661,540.20x = 992,310.30 × 656,010.60
  4. Step 4: Simplify right side
    661,540.20x = 650,966,075,289.18
  5. Step 5: Solve for x
    x = 650,966,075,289.18/661,540.20
  6. Step 6: Final answer
    x = 984,015.90

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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.