Home / 398,560,010.20-597,840,015.30-289,720,893.40

Finding the Fourth Proportional to 398,560,010.20, 597,840,015.30 and 289,720,893.40

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Solution

The fourth proportional to 398,560,010.20, 597,840,015.30 and 289,720,893.40 is: 434,581,340.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,560,010.20 : 597,840,015.30 = 289,720,893.40 : x
  2. Step 2: Convert to fraction form
    398,560,010.20/597,840,015.30 = 289,720,893.40/x
  3. Step 3: Cross multiply
    398,560,010.20x = 597,840,015.30 × 289,720,893.40
  4. Step 4: Simplify right side
    398,560,010.20x = 173,206,743,342,985,632
  5. Step 5: Solve for x
    x = 173,206,743,342,985,632/398,560,010.20
  6. Step 6: Final answer
    x = 434,581,340.10

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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.