Home / 778,979.80-1,168,469.70-329,551.30

Finding the Fourth Proportional to 778,979.80, 1,168,469.70 and 329,551.30

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Solution

The fourth proportional to 778,979.80, 1,168,469.70 and 329,551.30 is: 494,326.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,979.80 : 1,168,469.70 = 329,551.30 : x
  2. Step 2: Convert to fraction form
    778,979.80/1,168,469.70 = 329,551.30/x
  3. Step 3: Cross multiply
    778,979.80x = 1,168,469.70 × 329,551.30
  4. Step 4: Simplify right side
    778,979.80x = 385,070,708,645.61
  5. Step 5: Solve for x
    x = 385,070,708,645.61/778,979.80
  6. Step 6: Final answer
    x = 494,326.95

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Double scale
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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.