Home / 861,621.72-1,189,197.42-499,045.50

Finding the Fourth Proportional to 861,621.72, 1,189,197.42 and 499,045.50

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Solution

The fourth proportional to 861,621.72, 1,189,197.42 and 499,045.50 is: 688,775.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,621.72 : 1,189,197.42 = 499,045.50 : x
  2. Step 2: Convert to fraction form
    861,621.72/1,189,197.42 = 499,045.50/x
  3. Step 3: Cross multiply
    861,621.72x = 1,189,197.42 × 499,045.50
  4. Step 4: Simplify right side
    861,621.72x = 593,463,621,062.61
  5. Step 5: Solve for x
    x = 593,463,621,062.61/861,621.72
  6. Step 6: Final answer
    x = 688,775.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.