Home / 398,720,073.70-598,347,604.95-139,934,793.70

Finding the Fourth Proportional to 398,720,073.70, 598,347,604.95 and 139,934,793.70

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Solution

The fourth proportional to 398,720,073.70, 598,347,604.95 and 139,934,793.70 is: 209,996,070.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,720,073.70 : 598,347,604.95 = 139,934,793.70 : x
  2. Step 2: Convert to fraction form
    398,720,073.70/598,347,604.95 = 139,934,793.70/x
  3. Step 3: Cross multiply
    398,720,073.70x = 598,347,604.95 × 139,934,793.70
  4. Step 4: Simplify right side
    398,720,073.70x = 83,729,648,659,567,344
  5. Step 5: Solve for x
    x = 83,729,648,659,567,344/398,720,073.70
  6. Step 6: Final answer
    x = 209,996,070.38

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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.