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Finding the Fourth Proportional to 631,853.88, 871,956.30 and 345,374.04

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Solution

The fourth proportional to 631,853.88, 871,956.30 and 345,374.04 is: 476,615.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,853.88 : 871,956.30 = 345,374.04 : x
  2. Step 2: Convert to fraction form
    631,853.88/871,956.30 = 345,374.04/x
  3. Step 3: Cross multiply
    631,853.88x = 871,956.30 × 345,374.04
  4. Step 4: Simplify right side
    631,853.88x = 301,151,070,034.45
  5. Step 5: Solve for x
    x = 301,151,070,034.45/631,853.88
  6. Step 6: Final answer
    x = 476,615.05

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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.