Home / 853,139.70-1,177,402.41-490,680.90

Finding the Fourth Proportional to 853,139.70, 1,177,402.41 and 490,680.90

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Solution

The fourth proportional to 853,139.70, 1,177,402.41 and 490,680.90 is: 677,179.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,139.70 : 1,177,402.41 = 490,680.90 : x
  2. Step 2: Convert to fraction form
    853,139.70/1,177,402.41 = 490,680.90/x
  3. Step 3: Cross multiply
    853,139.70x = 1,177,402.41 × 490,680.90
  4. Step 4: Simplify right side
    853,139.70x = 577,728,874,200.97
  5. Step 5: Solve for x
    x = 577,728,874,200.97/853,139.70
  6. Step 6: Final answer
    x = 677,179.69

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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.