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Finding the Fourth Proportional to 631,674.65, 871,713.29 and 345,194.76

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Solution

The fourth proportional to 631,674.65, 871,713.29 and 345,194.76 is: 476,370.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,674.65 : 871,713.29 = 345,194.76 : x
  2. Step 2: Convert to fraction form
    631,674.65/871,713.29 = 345,194.76/x
  3. Step 3: Cross multiply
    631,674.65x = 871,713.29 × 345,194.76
  4. Step 4: Simplify right side
    631,674.65x = 300,910,864,062.27
  5. Step 5: Solve for x
    x = 300,910,864,062.27/631,674.65
  6. Step 6: Final answer
    x = 476,370.02

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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.