Home / 398,560,047.20-597,840,070.80-289,720,930.40

Finding the Fourth Proportional to 398,560,047.20, 597,840,070.80 and 289,720,930.40

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Solution

The fourth proportional to 398,560,047.20, 597,840,070.80 and 289,720,930.40 is: 434,581,395.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,560,047.20 : 597,840,070.80 = 289,720,930.40 : x
  2. Step 2: Convert to fraction form
    398,560,047.20/597,840,070.80 = 289,720,930.40/x
  3. Step 3: Cross multiply
    398,560,047.20x = 597,840,070.80 × 289,720,930.40
  4. Step 4: Simplify right side
    398,560,047.20x = 173,206,781,542,577,856
  5. Step 5: Solve for x
    x = 173,206,781,542,577,856/398,560,047.20
  6. Step 6: Final answer
    x = 434,581,395.60

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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.