Home / 778,540.40-1,167,810.60-279,954.80

Finding the Fourth Proportional to 778,540.40, 1,167,810.60 and 279,954.80

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Solution

The fourth proportional to 778,540.40, 1,167,810.60 and 279,954.80 is: 419,932.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,540.40 : 1,167,810.60 = 279,954.80 : x
  2. Step 2: Convert to fraction form
    778,540.40/1,167,810.60 = 279,954.80/x
  3. Step 3: Cross multiply
    778,540.40x = 1,167,810.60 × 279,954.80
  4. Step 4: Simplify right side
    778,540.40x = 326,934,182,960.88
  5. Step 5: Solve for x
    x = 326,934,182,960.88/778,540.40
  6. Step 6: Final answer
    x = 419,932.20

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Similar ratio
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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.