Home / 781,309.80-1,172,003.10-408,061.80

Finding the Fourth Proportional to 781,309.80, 1,172,003.10 and 408,061.80

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Solution

The fourth proportional to 781,309.80, 1,172,003.10 and 408,061.80 is: 612,112.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,309.80 : 1,172,003.10 = 408,061.80 : x
  2. Step 2: Convert to fraction form
    781,309.80/1,172,003.10 = 408,061.80/x
  3. Step 3: Cross multiply
    781,309.80x = 1,172,003.10 × 408,061.80
  4. Step 4: Simplify right side
    781,309.80x = 478,249,694,591.58
  5. Step 5: Solve for x
    x = 478,249,694,591.58/781,309.80
  6. Step 6: Final answer
    x = 612,112.76

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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.