Home / 643,987,545.60-966,135,436.20-207,329,047.96

Finding the Fourth Proportional to 643,987,545.60, 966,135,436.20 and 207,329,047.96

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Solution

The fourth proportional to 643,987,545.60, 966,135,436.20 and 207,329,047.96 is: 311,043,189.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,987,545.60 : 966,135,436.20 = 207,329,047.96 : x
  2. Step 2: Convert to fraction form
    643,987,545.60/966,135,436.20 = 207,329,047.96/x
  3. Step 3: Cross multiply
    643,987,545.60x = 966,135,436.20 × 207,329,047.96
  4. Step 4: Simplify right side
    643,987,545.60x = 200,307,940,187,765,344
  5. Step 5: Solve for x
    x = 200,307,940,187,765,344/643,987,545.60
  6. Step 6: Final answer
    x = 311,043,189.51

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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.