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Finding the Fourth Proportional to 591,082.30, 815,713.70 and 349,571.89

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Solution

The fourth proportional to 591,082.30, 815,713.70 and 349,571.89 is: 482,421.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,082.30 : 815,713.70 = 349,571.89 : x
  2. Step 2: Convert to fraction form
    591,082.30/815,713.70 = 349,571.89/x
  3. Step 3: Cross multiply
    591,082.30x = 815,713.70 × 349,571.89
  4. Step 4: Simplify right side
    591,082.30x = 285,150,579,807.89
  5. Step 5: Solve for x
    x = 285,150,579,807.89/591,082.30
  6. Step 6: Final answer
    x = 482,421.11

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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.