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Finding the Fourth Proportional to 538,451.20, 806,985.60 and 327,865.60

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Solution

The fourth proportional to 538,451.20, 806,985.60 and 327,865.60 is: 491,377.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,451.20 : 806,985.60 = 327,865.60 : x
  2. Step 2: Convert to fraction form
    538,451.20/806,985.60 = 327,865.60/x
  3. Step 3: Cross multiply
    538,451.20x = 806,985.60 × 327,865.60
  4. Step 4: Simplify right side
    538,451.20x = 264,582,817,935.36
  5. Step 5: Solve for x
    x = 264,582,817,935.36/538,451.20
  6. Step 6: Final answer
    x = 491,377.52

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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.