Home / 1,191,772.20-1,787,658.30-718,213.80

Finding the Fourth Proportional to 1,191,772.20, 1,787,658.30 and 718,213.80

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Solution

The fourth proportional to 1,191,772.20, 1,787,658.30 and 718,213.80 is: 1,077,320.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,772.20 : 1,787,658.30 = 718,213.80 : x
  2. Step 2: Convert to fraction form
    1,191,772.20/1,787,658.30 = 718,213.80/x
  3. Step 3: Cross multiply
    1,191,772.20x = 1,787,658.30 × 718,213.80
  4. Step 4: Simplify right side
    1,191,772.20x = 1,283,920,860,744.54
  5. Step 5: Solve for x
    x = 1,283,920,860,744.54/1,191,772.20
  6. Step 6: Final answer
    x = 1,077,320.70

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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.