Home / 1,188,139.70-1,782,209.55-715,747.70

Finding the Fourth Proportional to 1,188,139.70, 1,782,209.55 and 715,747.70

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Solution

The fourth proportional to 1,188,139.70, 1,782,209.55 and 715,747.70 is: 1,073,621.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,139.70 : 1,782,209.55 = 715,747.70 : x
  2. Step 2: Convert to fraction form
    1,188,139.70/1,782,209.55 = 715,747.70/x
  3. Step 3: Cross multiply
    1,188,139.70x = 1,782,209.55 × 715,747.70
  4. Step 4: Simplify right side
    1,188,139.70x = 1,275,612,386,330.53
  5. Step 5: Solve for x
    x = 1,275,612,386,330.53/1,188,139.70
  6. Step 6: Final answer
    x = 1,073,621.55

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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.