Home / 318,888,001.20-478,332,001.80-278,577,217.20

Finding the Fourth Proportional to 318,888,001.20, 478,332,001.80 and 278,577,217.20

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Solution

The fourth proportional to 318,888,001.20, 478,332,001.80 and 278,577,217.20 is: 417,865,825.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,888,001.20 : 478,332,001.80 = 278,577,217.20 : x
  2. Step 2: Convert to fraction form
    318,888,001.20/478,332,001.80 = 278,577,217.20/x
  3. Step 3: Cross multiply
    318,888,001.20x = 478,332,001.80 × 278,577,217.20
  4. Step 4: Simplify right side
    318,888,001.20x = 133,252,397,959,149,392
  5. Step 5: Solve for x
    x = 133,252,397,959,149,392/318,888,001.20
  6. Step 6: Final answer
    x = 417,865,825.80

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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.