Home / 641,995,446.38-885,953,844.49-391,099,825.11

Finding the Fourth Proportional to 641,995,446.38, 885,953,844.49 and 391,099,825.11

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Solution

The fourth proportional to 641,995,446.38, 885,953,844.49 and 391,099,825.11 is: 539,717,836.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,995,446.38 : 885,953,844.49 = 391,099,825.11 : x
  2. Step 2: Convert to fraction form
    641,995,446.38/885,953,844.49 = 391,099,825.11/x
  3. Step 3: Cross multiply
    641,995,446.38x = 885,953,844.49 × 391,099,825.11
  4. Step 4: Simplify right side
    641,995,446.38x = 346,496,393,635,571,136
  5. Step 5: Solve for x
    x = 346,496,393,635,571,136/641,995,446.38
  6. Step 6: Final answer
    x = 539,717,836.92

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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.