Home / 393,395,400.78-542,956,734.27-234,635,711.82

Finding the Fourth Proportional to 393,395,400.78, 542,956,734.27 and 234,635,711.82

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Solution

The fourth proportional to 393,395,400.78, 542,956,734.27 and 234,635,711.82 is: 323,839,677.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,395,400.78 : 542,956,734.27 = 234,635,711.82 : x
  2. Step 2: Convert to fraction form
    393,395,400.78/542,956,734.27 = 234,635,711.82/x
  3. Step 3: Cross multiply
    393,395,400.78x = 542,956,734.27 × 234,635,711.82
  4. Step 4: Simplify right side
    393,395,400.78x = 127,397,039,832,904,032
  5. Step 5: Solve for x
    x = 127,397,039,832,904,032/393,395,400.78
  6. Step 6: Final answer
    x = 323,839,677.79

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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.