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Finding the Fourth Proportional to 512,557.60, 768,836.40 and 486,896.80

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Solution

The fourth proportional to 512,557.60, 768,836.40 and 486,896.80 is: 730,345.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,557.60 : 768,836.40 = 486,896.80 : x
  2. Step 2: Convert to fraction form
    512,557.60/768,836.40 = 486,896.80/x
  3. Step 3: Cross multiply
    512,557.60x = 768,836.40 × 486,896.80
  4. Step 4: Simplify right side
    512,557.60x = 374,343,982,883.52
  5. Step 5: Solve for x
    x = 374,343,982,883.52/512,557.60
  6. Step 6: Final answer
    x = 730,345.20

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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.