Home / 767,712.80-1,151,569.20-394,464.80

Finding the Fourth Proportional to 767,712.80, 1,151,569.20 and 394,464.80

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Solution

The fourth proportional to 767,712.80, 1,151,569.20 and 394,464.80 is: 591,697.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,712.80 : 1,151,569.20 = 394,464.80 : x
  2. Step 2: Convert to fraction form
    767,712.80/1,151,569.20 = 394,464.80/x
  3. Step 3: Cross multiply
    767,712.80x = 1,151,569.20 × 394,464.80
  4. Step 4: Simplify right side
    767,712.80x = 454,253,514,164.16
  5. Step 5: Solve for x
    x = 454,253,514,164.16/767,712.80
  6. Step 6: Final answer
    x = 591,697.20

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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.