Home / 427,123,363.06-640,340,263.63-392,647,103.91

Finding the Fourth Proportional to 427,123,363.06, 640,340,263.63 and 392,647,103.91

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Solution

The fourth proportional to 427,123,363.06, 640,340,263.63 and 392,647,103.91 is: 588,653,704.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,123,363.06 : 640,340,263.63 = 392,647,103.91 : x
  2. Step 2: Convert to fraction form
    427,123,363.06/640,340,263.63 = 392,647,103.91/x
  3. Step 3: Cross multiply
    427,123,363.06x = 640,340,263.63 × 392,647,103.91
  4. Step 4: Simplify right side
    427,123,363.06x = 251,427,750,030,676,832
  5. Step 5: Solve for x
    x = 251,427,750,030,676,832/427,123,363.06
  6. Step 6: Final answer
    x = 588,653,704.70

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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.