Home / 782,211.20-1,171,567.20-642,243.20

Finding the Fourth Proportional to 782,211.20, 1,171,567.20 and 642,243.20

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Solution

The fourth proportional to 782,211.20, 1,171,567.20 and 642,243.20 is: 961,928.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,211.20 : 1,171,567.20 = 642,243.20 : x
  2. Step 2: Convert to fraction form
    782,211.20/1,171,567.20 = 642,243.20/x
  3. Step 3: Cross multiply
    782,211.20x = 1,171,567.20 × 642,243.20
  4. Step 4: Simplify right side
    782,211.20x = 752,431,067,543.04
  5. Step 5: Solve for x
    x = 752,431,067,543.04/782,211.20
  6. Step 6: Final answer
    x = 961,928.27

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1.5x scale

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.