Home / 778,685.40-1,168,246.80-329,621.40

Finding the Fourth Proportional to 778,685.40, 1,168,246.80 and 329,621.40

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Solution

The fourth proportional to 778,685.40, 1,168,246.80 and 329,621.40 is: 494,524.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,685.40 : 1,168,246.80 = 329,621.40 : x
  2. Step 2: Convert to fraction form
    778,685.40/1,168,246.80 = 329,621.40/x
  3. Step 3: Cross multiply
    778,685.40x = 1,168,246.80 × 329,621.40
  4. Step 4: Simplify right side
    778,685.40x = 385,079,145,761.52
  5. Step 5: Solve for x
    x = 385,079,145,761.52/778,685.40
  6. Step 6: Final answer
    x = 494,524.68

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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.