Home / 485,787,456.33-728,681,156.81-136,085,299.30

Finding the Fourth Proportional to 485,787,456.33, 728,681,156.81 and 136,085,299.30

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Solution

The fourth proportional to 485,787,456.33, 728,681,156.81 and 136,085,299.30 is: 204,127,941.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,787,456.33 : 728,681,156.81 = 136,085,299.30 : x
  2. Step 2: Convert to fraction form
    485,787,456.33/728,681,156.81 = 136,085,299.30/x
  3. Step 3: Cross multiply
    485,787,456.33x = 728,681,156.81 × 136,085,299.30
  4. Step 4: Simplify right side
    485,787,456.33x = 99,162,793,318,218,400
  5. Step 5: Solve for x
    x = 99,162,793,318,218,400/485,787,456.33
  6. Step 6: Final answer
    x = 204,127,941.19

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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.