Home / 861,122.30-1,290,884.76-381,094.94

Finding the Fourth Proportional to 861,122.30, 1,290,884.76 and 381,094.94

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Solution

The fourth proportional to 861,122.30, 1,290,884.76 and 381,094.94 is: 571,288.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,122.30 : 1,290,884.76 = 381,094.94 : x
  2. Step 2: Convert to fraction form
    861,122.30/1,290,884.76 = 381,094.94/x
  3. Step 3: Cross multiply
    861,122.30x = 1,290,884.76 × 381,094.94
  4. Step 4: Simplify right side
    861,122.30x = 491,949,650,159.11
  5. Step 5: Solve for x
    x = 491,949,650,159.11/861,122.30
  6. Step 6: Final answer
    x = 571,288.94

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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.