Home / 1,581,279.74-2,182,139.58-856,121.57

Finding the Fourth Proportional to 1,581,279.74, 2,182,139.58 and 856,121.57

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Solution

The fourth proportional to 1,581,279.74, 2,182,139.58 and 856,121.57 is: 1,181,433.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581,279.74 : 2,182,139.58 = 856,121.57 : x
  2. Step 2: Convert to fraction form
    1,581,279.74/2,182,139.58 = 856,121.57/x
  3. Step 3: Cross multiply
    1,581,279.74x = 2,182,139.58 × 856,121.57
  4. Step 4: Simplify right side
    1,581,279.74x = 1,868,176,763,188.74
  5. Step 5: Solve for x
    x = 1,868,176,763,188.74/1,581,279.74
  6. Step 6: Final answer
    x = 1,181,433.44

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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.