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Finding the Fourth Proportional to 656,346.40, 984,519.60 and 432,008.80

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Solution

The fourth proportional to 656,346.40, 984,519.60 and 432,008.80 is: 648,013.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,346.40 : 984,519.60 = 432,008.80 : x
  2. Step 2: Convert to fraction form
    656,346.40/984,519.60 = 432,008.80/x
  3. Step 3: Cross multiply
    656,346.40x = 984,519.60 × 432,008.80
  4. Step 4: Simplify right side
    656,346.40x = 425,321,130,972.48
  5. Step 5: Solve for x
    x = 425,321,130,972.48/656,346.40
  6. Step 6: Final answer
    x = 648,013.20

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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.