Home / 1,298,560.80-1,947,841.20-820,263.90

Finding the Fourth Proportional to 1,298,560.80, 1,947,841.20 and 820,263.90

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Solution

The fourth proportional to 1,298,560.80, 1,947,841.20 and 820,263.90 is: 1,230,395.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,560.80 : 1,947,841.20 = 820,263.90 : x
  2. Step 2: Convert to fraction form
    1,298,560.80/1,947,841.20 = 820,263.90/x
  3. Step 3: Cross multiply
    1,298,560.80x = 1,947,841.20 × 820,263.90
  4. Step 4: Simplify right side
    1,298,560.80x = 1,597,743,819,292.68
  5. Step 5: Solve for x
    x = 1,597,743,819,292.68/1,298,560.80
  6. Step 6: Final answer
    x = 1,230,395.85

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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.