Home / 717,764,235.05-990,490,156.00-395,904,956.78

Finding the Fourth Proportional to 717,764,235.05, 990,490,156.00 and 395,904,956.78

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Solution

The fourth proportional to 717,764,235.05, 990,490,156.00 and 395,904,956.78 is: 546,335,333.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,764,235.05 : 990,490,156.00 = 395,904,956.78 : x
  2. Step 2: Convert to fraction form
    717,764,235.05/990,490,156.00 = 395,904,956.78/x
  3. Step 3: Cross multiply
    717,764,235.05x = 990,490,156.00 × 395,904,956.78
  4. Step 4: Simplify right side
    717,764,235.05x = 392,139,962,403,681,920
  5. Step 5: Solve for x
    x = 392,139,962,403,681,920/717,764,235.05
  6. Step 6: Final answer
    x = 546,335,333.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.