Home / 782,646.20-1,080,055.74-443,180.60

Finding the Fourth Proportional to 782,646.20, 1,080,055.74 and 443,180.60

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Solution

The fourth proportional to 782,646.20, 1,080,055.74 and 443,180.60 is: 611,591.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,646.20 : 1,080,055.74 = 443,180.60 : x
  2. Step 2: Convert to fraction form
    782,646.20/1,080,055.74 = 443,180.60/x
  3. Step 3: Cross multiply
    782,646.20x = 1,080,055.74 × 443,180.60
  4. Step 4: Simplify right side
    782,646.20x = 478,659,750,886.64
  5. Step 5: Solve for x
    x = 478,659,750,886.64/782,646.20
  6. Step 6: Final answer
    x = 611,591.48

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.