Home / 778,856.80-1,168,285.20-329,428.30

Finding the Fourth Proportional to 778,856.80, 1,168,285.20 and 329,428.30

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Solution

The fourth proportional to 778,856.80, 1,168,285.20 and 329,428.30 is: 494,142.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,856.80 : 1,168,285.20 = 329,428.30 : x
  2. Step 2: Convert to fraction form
    778,856.80/1,168,285.20 = 329,428.30/x
  3. Step 3: Cross multiply
    778,856.80x = 1,168,285.20 × 329,428.30
  4. Step 4: Simplify right side
    778,856.80x = 384,866,207,351.16
  5. Step 5: Solve for x
    x = 384,866,207,351.16/778,856.80
  6. Step 6: Final answer
    x = 494,142.45

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Half scale
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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.