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Finding the Fourth Proportional to 538,318.20, 805,922.10 and 328,366.20

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Solution

The fourth proportional to 538,318.20, 805,922.10 and 328,366.20 is: 491,600.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,318.20 : 805,922.10 = 328,366.20 : x
  2. Step 2: Convert to fraction form
    538,318.20/805,922.10 = 328,366.20/x
  3. Step 3: Cross multiply
    538,318.20x = 805,922.10 × 328,366.20
  4. Step 4: Simplify right side
    538,318.20x = 264,637,577,473.02
  5. Step 5: Solve for x
    x = 264,637,577,473.02/538,318.20
  6. Step 6: Final answer
    x = 491,600.65

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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.