Home / 778,934.30-1,168,401.45-280,118.30

Finding the Fourth Proportional to 778,934.30, 1,168,401.45 and 280,118.30

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Solution

The fourth proportional to 778,934.30, 1,168,401.45 and 280,118.30 is: 420,177.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,934.30 : 1,168,401.45 = 280,118.30 : x
  2. Step 2: Convert to fraction form
    778,934.30/1,168,401.45 = 280,118.30/x
  3. Step 3: Cross multiply
    778,934.30x = 1,168,401.45 × 280,118.30
  4. Step 4: Simplify right side
    778,934.30x = 327,290,627,891.54
  5. Step 5: Solve for x
    x = 327,290,627,891.54/778,934.30
  6. Step 6: Final answer
    x = 420,177.45

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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.