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Finding the Fourth Proportional to 554,080.88, 764,461.20 and 338,996.72

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Solution

The fourth proportional to 554,080.88, 764,461.20 and 338,996.72 is: 467,711.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,080.88 : 764,461.20 = 338,996.72 : x
  2. Step 2: Convert to fraction form
    554,080.88/764,461.20 = 338,996.72/x
  3. Step 3: Cross multiply
    554,080.88x = 764,461.20 × 338,996.72
  4. Step 4: Simplify right side
    554,080.88x = 259,149,839,367.26
  5. Step 5: Solve for x
    x = 259,149,839,367.26/554,080.88
  6. Step 6: Final answer
    x = 467,711.21

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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.