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Finding the Fourth Proportional to 631,853.08, 871,959 and 377,198.80

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Solution

The fourth proportional to 631,853.08, 871,959 and 377,198.80 is: 520,535.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,853.08 : 871,959 = 377,198.80 : x
  2. Step 2: Convert to fraction form
    631,853.08/871,959 = 377,198.80/x
  3. Step 3: Cross multiply
    631,853.08x = 871,959 × 377,198.80
  4. Step 4: Simplify right side
    631,853.08x = 328,901,888,449.20
  5. Step 5: Solve for x
    x = 328,901,888,449.20/631,853.08
  6. Step 6: Final answer
    x = 520,535.39

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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.