Home / 787,512.44-1,086,710.78-443,330.55

Finding the Fourth Proportional to 787,512.44, 1,086,710.78 and 443,330.55

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Solution

The fourth proportional to 787,512.44, 1,086,710.78 and 443,330.55 is: 611,764.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,512.44 : 1,086,710.78 = 443,330.55 : x
  2. Step 2: Convert to fraction form
    787,512.44/1,086,710.78 = 443,330.55/x
  3. Step 3: Cross multiply
    787,512.44x = 1,086,710.78 × 443,330.55
  4. Step 4: Simplify right side
    787,512.44x = 481,772,088,896.66
  5. Step 5: Solve for x
    x = 481,772,088,896.66/787,512.44
  6. Step 6: Final answer
    x = 611,764.42

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.