Home / 767,680.80-1,151,521.20-394,432.80

Finding the Fourth Proportional to 767,680.80, 1,151,521.20 and 394,432.80

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Solution

The fourth proportional to 767,680.80, 1,151,521.20 and 394,432.80 is: 591,649.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,680.80 : 1,151,521.20 = 394,432.80 : x
  2. Step 2: Convert to fraction form
    767,680.80/1,151,521.20 = 394,432.80/x
  3. Step 3: Cross multiply
    767,680.80x = 1,151,521.20 × 394,432.80
  4. Step 4: Simplify right side
    767,680.80x = 454,197,731,175.36
  5. Step 5: Solve for x
    x = 454,197,731,175.36/767,680.80
  6. Step 6: Final answer
    x = 591,649.20

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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.