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Finding the Fourth Proportional to 631,086.12, 871,011.09 and 372,952.08

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Solution

The fourth proportional to 631,086.12, 871,011.09 and 372,952.08 is: 514,740.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,086.12 : 871,011.09 = 372,952.08 : x
  2. Step 2: Convert to fraction form
    631,086.12/871,011.09 = 372,952.08/x
  3. Step 3: Cross multiply
    631,086.12x = 871,011.09 × 372,952.08
  4. Step 4: Simplify right side
    631,086.12x = 324,845,397,718.57
  5. Step 5: Solve for x
    x = 324,845,397,718.57/631,086.12
  6. Step 6: Final answer
    x = 514,740.20

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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.