Home / 1,188,212.20-1,782,318.30-715,820.20

Finding the Fourth Proportional to 1,188,212.20, 1,782,318.30 and 715,820.20

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Solution

The fourth proportional to 1,188,212.20, 1,782,318.30 and 715,820.20 is: 1,073,730.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,212.20 : 1,782,318.30 = 715,820.20 : x
  2. Step 2: Convert to fraction form
    1,188,212.20/1,782,318.30 = 715,820.20/x
  3. Step 3: Cross multiply
    1,188,212.20x = 1,782,318.30 × 715,820.20
  4. Step 4: Simplify right side
    1,188,212.20x = 1,275,819,441,969.66
  5. Step 5: Solve for x
    x = 1,275,819,441,969.66/1,188,212.20
  6. Step 6: Final answer
    x = 1,073,730.30

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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.