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Finding the Fourth Proportional to 591,087.30, 815,720.60 and 349,576.90

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Solution

The fourth proportional to 591,087.30, 815,720.60 and 349,576.90 is: 482,428.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,087.30 : 815,720.60 = 349,576.90 : x
  2. Step 2: Convert to fraction form
    591,087.30/815,720.60 = 349,576.90/x
  3. Step 3: Cross multiply
    591,087.30x = 815,720.60 × 349,576.90
  4. Step 4: Simplify right side
    591,087.30x = 285,157,078,614.14
  5. Step 5: Solve for x
    x = 285,157,078,614.14/591,087.30
  6. Step 6: Final answer
    x = 482,428.02

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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.