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Finding the Fourth Proportional to 529,309.88, 729,112.01 and 427,049.18

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Solution

The fourth proportional to 529,309.88, 729,112.01 and 427,049.18 is: 588,250.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,309.88 : 729,112.01 = 427,049.18 : x
  2. Step 2: Convert to fraction form
    529,309.88/729,112.01 = 427,049.18/x
  3. Step 3: Cross multiply
    529,309.88x = 729,112.01 × 427,049.18
  4. Step 4: Simplify right side
    529,309.88x = 311,366,685,998.65
  5. Step 5: Solve for x
    x = 311,366,685,998.65/529,309.88
  6. Step 6: Final answer
    x = 588,250.28

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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.