Home / 656,461.20-984,108.60-389,938.80

Finding the Fourth Proportional to 656,461.20, 984,108.60 and 389,938.80

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Solution

The fourth proportional to 656,461.20, 984,108.60 and 389,938.80 is: 584,561.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,461.20 : 984,108.60 = 389,938.80 : x
  2. Step 2: Convert to fraction form
    656,461.20/984,108.60 = 389,938.80/x
  3. Step 3: Cross multiply
    656,461.20x = 984,108.60 × 389,938.80
  4. Step 4: Simplify right side
    656,461.20x = 383,742,126,553.68
  5. Step 5: Solve for x
    x = 383,742,126,553.68/656,461.20
  6. Step 6: Final answer
    x = 584,561.78

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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.