Home / 778,880.80-1,168,321.20-329,452.30

Finding the Fourth Proportional to 778,880.80, 1,168,321.20 and 329,452.30

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Solution

The fourth proportional to 778,880.80, 1,168,321.20 and 329,452.30 is: 494,178.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,880.80 : 1,168,321.20 = 329,452.30 : x
  2. Step 2: Convert to fraction form
    778,880.80/1,168,321.20 = 329,452.30/x
  3. Step 3: Cross multiply
    778,880.80x = 1,168,321.20 × 329,452.30
  4. Step 4: Simplify right side
    778,880.80x = 384,906,106,478.76
  5. Step 5: Solve for x
    x = 384,906,106,478.76/778,880.80
  6. Step 6: Final answer
    x = 494,178.45

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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.