Home / 3,420,459.97-5,131,488.31-991,663.83

Finding the Fourth Proportional to 3,420,459.97, 5,131,488.31 and 991,663.83

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Solution

The fourth proportional to 3,420,459.97, 5,131,488.31 and 991,663.83 is: 1,487,727.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420,459.97 : 5,131,488.31 = 991,663.83 : x
  2. Step 2: Convert to fraction form
    3,420,459.97/5,131,488.31 = 991,663.83/x
  3. Step 3: Cross multiply
    3,420,459.97x = 5,131,488.31 × 991,663.83
  4. Step 4: Simplify right side
    3,420,459.97x = 5,088,711,348,615.67
  5. Step 5: Solve for x
    x = 5,088,711,348,615.67/3,420,459.97
  6. Step 6: Final answer
    x = 1,487,727.21

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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.