Home / 427,123,363.49-640,340,264.26-392,647,104.33

Finding the Fourth Proportional to 427,123,363.49, 640,340,264.26 and 392,647,104.33

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Solution

The fourth proportional to 427,123,363.49, 640,340,264.26 and 392,647,104.33 is: 588,653,705.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,123,363.49 : 640,340,264.26 = 392,647,104.33 : x
  2. Step 2: Convert to fraction form
    427,123,363.49/640,340,264.26 = 392,647,104.33/x
  3. Step 3: Cross multiply
    427,123,363.49x = 640,340,264.26 × 392,647,104.33
  4. Step 4: Simplify right side
    427,123,363.49x = 251,427,750,549,284,256
  5. Step 5: Solve for x
    x = 251,427,750,549,284,256/427,123,363.49
  6. Step 6: Final answer
    x = 588,653,705.33

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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.