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Finding the Fourth Proportional to 766,810.80, 1,150,216.20 and 483,375.60

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Solution

The fourth proportional to 766,810.80, 1,150,216.20 and 483,375.60 is: 725,063.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,810.80 : 1,150,216.20 = 483,375.60 : x
  2. Step 2: Convert to fraction form
    766,810.80/1,150,216.20 = 483,375.60/x
  3. Step 3: Cross multiply
    766,810.80x = 1,150,216.20 × 483,375.60
  4. Step 4: Simplify right side
    766,810.80x = 555,986,445,804.72
  5. Step 5: Solve for x
    x = 555,986,445,804.72/766,810.80
  6. Step 6: Final answer
    x = 725,063.40

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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.