Home / 641,995,445.38-885,953,843.11-391,099,824.11

Finding the Fourth Proportional to 641,995,445.38, 885,953,843.11 and 391,099,824.11

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Solution

The fourth proportional to 641,995,445.38, 885,953,843.11 and 391,099,824.11 is: 539,717,835.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,995,445.38 : 885,953,843.11 = 391,099,824.11 : x
  2. Step 2: Convert to fraction form
    641,995,445.38/885,953,843.11 = 391,099,824.11/x
  3. Step 3: Cross multiply
    641,995,445.38x = 885,953,843.11 × 391,099,824.11
  4. Step 4: Simplify right side
    641,995,445.38x = 346,496,392,209,899,584
  5. Step 5: Solve for x
    x = 346,496,392,209,899,584/641,995,445.38
  6. Step 6: Final answer
    x = 539,717,835.54

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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.