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Finding the Fourth Proportional to 591,663.40, 888,051.90 and 311,381.80

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Solution

The fourth proportional to 591,663.40, 888,051.90 and 311,381.80 is: 467,365.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,663.40 : 888,051.90 = 311,381.80 : x
  2. Step 2: Convert to fraction form
    591,663.40/888,051.90 = 311,381.80/x
  3. Step 3: Cross multiply
    591,663.40x = 888,051.90 × 311,381.80
  4. Step 4: Simplify right side
    591,663.40x = 276,523,199,115.42
  5. Step 5: Solve for x
    x = 276,523,199,115.42/591,663.40
  6. Step 6: Final answer
    x = 467,365.73

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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.