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Finding the Fourth Proportional to 485,425.71, 669,888.50 and 270,561.47

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Solution

The fourth proportional to 485,425.71, 669,888.50 and 270,561.47 is: 373,375.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,425.71 : 669,888.50 = 270,561.47 : x
  2. Step 2: Convert to fraction form
    485,425.71/669,888.50 = 270,561.47/x
  3. Step 3: Cross multiply
    485,425.71x = 669,888.50 × 270,561.47
  4. Step 4: Simplify right side
    485,425.71x = 181,246,012,593.85
  5. Step 5: Solve for x
    x = 181,246,012,593.85/485,425.71
  6. Step 6: Final answer
    x = 373,375.39

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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.