Home / 778,801.85-1,168,202.78-329,406.16

Finding the Fourth Proportional to 778,801.85, 1,168,202.78 and 329,406.16

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Solution

The fourth proportional to 778,801.85, 1,168,202.78 and 329,406.16 is: 494,109.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,801.85 : 1,168,202.78 = 329,406.16 : x
  2. Step 2: Convert to fraction form
    778,801.85/1,168,202.78 = 329,406.16/x
  3. Step 3: Cross multiply
    778,801.85x = 1,168,202.78 × 329,406.16
  4. Step 4: Simplify right side
    778,801.85x = 384,813,191,861.13
  5. Step 5: Solve for x
    x = 384,813,191,861.13/778,801.85
  6. Step 6: Final answer
    x = 494,109.24

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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.