Home / 431,567,998.80-647,351,998.20-247,335,118.80

Finding the Fourth Proportional to 431,567,998.80, 647,351,998.20 and 247,335,118.80

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Solution

The fourth proportional to 431,567,998.80, 647,351,998.20 and 247,335,118.80 is: 371,002,678.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,567,998.80 : 647,351,998.20 = 247,335,118.80 : x
  2. Step 2: Convert to fraction form
    431,567,998.80/647,351,998.20 = 247,335,118.80/x
  3. Step 3: Cross multiply
    431,567,998.80x = 647,351,998.20 × 247,335,118.80
  4. Step 4: Simplify right side
    431,567,998.80x = 160,112,883,380,214,400
  5. Step 5: Solve for x
    x = 160,112,883,380,214,400/431,567,998.80
  6. Step 6: Final answer
    x = 371,002,678.20

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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.