Home / 1,381,630.20-2,068,298.10-820,375.80

Finding the Fourth Proportional to 1,381,630.20, 2,068,298.10 and 820,375.80

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Solution

The fourth proportional to 1,381,630.20, 2,068,298.10 and 820,375.80 is: 1,228,101.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381,630.20 : 2,068,298.10 = 820,375.80 : x
  2. Step 2: Convert to fraction form
    1,381,630.20/2,068,298.10 = 820,375.80/x
  3. Step 3: Cross multiply
    1,381,630.20x = 2,068,298.10 × 820,375.80
  4. Step 4: Simplify right side
    1,381,630.20x = 1,696,781,708,425.98
  5. Step 5: Solve for x
    x = 1,696,781,708,425.98/1,381,630.20
  6. Step 6: Final answer
    x = 1,228,101.20

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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.