Home / 1,581,279.87-2,182,139.75-856,121.70

Finding the Fourth Proportional to 1,581,279.87, 2,182,139.75 and 856,121.70

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Solution

The fourth proportional to 1,581,279.87, 2,182,139.75 and 856,121.70 is: 1,181,433.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581,279.87 : 2,182,139.75 = 856,121.70 : x
  2. Step 2: Convert to fraction form
    1,581,279.87/2,182,139.75 = 856,121.70/x
  3. Step 3: Cross multiply
    1,581,279.87x = 2,182,139.75 × 856,121.70
  4. Step 4: Simplify right side
    1,581,279.87x = 1,868,177,181,496.88
  5. Step 5: Solve for x
    x = 1,868,177,181,496.88/1,581,279.87
  6. Step 6: Final answer
    x = 1,181,433.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.