Home / 1,189,345.20-1,780,372.80-655,231.20

Finding the Fourth Proportional to 1,189,345.20, 1,780,372.80 and 655,231.20

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Solution

The fourth proportional to 1,189,345.20, 1,780,372.80 and 655,231.20 is: 980,838.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,345.20 : 1,780,372.80 = 655,231.20 : x
  2. Step 2: Convert to fraction form
    1,189,345.20/1,780,372.80 = 655,231.20/x
  3. Step 3: Cross multiply
    1,189,345.20x = 1,780,372.80 × 655,231.20
  4. Step 4: Simplify right side
    1,189,345.20x = 1,166,555,806,191.36
  5. Step 5: Solve for x
    x = 1,166,555,806,191.36/1,189,345.20
  6. Step 6: Final answer
    x = 980,838.71

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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.