Home / 1,121,301.60-1,681,952.40-820,151.70

Finding the Fourth Proportional to 1,121,301.60, 1,681,952.40 and 820,151.70

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Solution

The fourth proportional to 1,121,301.60, 1,681,952.40 and 820,151.70 is: 1,230,227.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,301.60 : 1,681,952.40 = 820,151.70 : x
  2. Step 2: Convert to fraction form
    1,121,301.60/1,681,952.40 = 820,151.70/x
  3. Step 3: Cross multiply
    1,121,301.60x = 1,681,952.40 × 820,151.70
  4. Step 4: Simplify right side
    1,121,301.60x = 1,379,456,120,179.08
  5. Step 5: Solve for x
    x = 1,379,456,120,179.08/1,121,301.60
  6. Step 6: Final answer
    x = 1,230,227.55

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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.