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Finding the Fourth Proportional to 753,507.36, 1,039,836 and 409,340.55

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Solution

The fourth proportional to 753,507.36, 1,039,836 and 409,340.55 is: 564,887.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,507.36 : 1,039,836 = 409,340.55 : x
  2. Step 2: Convert to fraction form
    753,507.36/1,039,836 = 409,340.55/x
  3. Step 3: Cross multiply
    753,507.36x = 1,039,836 × 409,340.55
  4. Step 4: Simplify right side
    753,507.36x = 425,647,040,149.80
  5. Step 5: Solve for x
    x = 425,647,040,149.80/753,507.36
  6. Step 6: Final answer
    x = 564,887.70

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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.