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Finding the Fourth Proportional to 778,978.80, 1,168,468.20 and 329,550.30

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Solution

The fourth proportional to 778,978.80, 1,168,468.20 and 329,550.30 is: 494,325.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,978.80 : 1,168,468.20 = 329,550.30 : x
  2. Step 2: Convert to fraction form
    778,978.80/1,168,468.20 = 329,550.30/x
  3. Step 3: Cross multiply
    778,978.80x = 1,168,468.20 × 329,550.30
  4. Step 4: Simplify right side
    778,978.80x = 385,069,045,850.46
  5. Step 5: Solve for x
    x = 385,069,045,850.46/778,978.80
  6. Step 6: Final answer
    x = 494,325.45

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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.