Home / 723,837,375-998,815,650.78-406,224,773.40

Finding the Fourth Proportional to 723,837,375, 998,815,650.78 and 406,224,773.40

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Solution

The fourth proportional to 723,837,375, 998,815,650.78 and 406,224,773.40 is: 560,545,331.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,837,375 : 998,815,650.78 = 406,224,773.40 : x
  2. Step 2: Convert to fraction form
    723,837,375/998,815,650.78 = 406,224,773.40/x
  3. Step 3: Cross multiply
    723,837,375x = 998,815,650.78 × 406,224,773.40
  4. Step 4: Simplify right side
    723,837,375x = 405,743,661,406,478,976
  5. Step 5: Solve for x
    x = 405,743,661,406,478,976/723,837,375
  6. Step 6: Final answer
    x = 560,545,331.62

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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.