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Finding the Fourth Proportional to 631,504.74, 871,489.08 and 345,042.60

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Solution

The fourth proportional to 631,504.74, 871,489.08 and 345,042.60 is: 476,165.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,504.74 : 871,489.08 = 345,042.60 : x
  2. Step 2: Convert to fraction form
    631,504.74/871,489.08 = 345,042.60/x
  3. Step 3: Cross multiply
    631,504.74x = 871,489.08 × 345,042.60
  4. Step 4: Simplify right side
    631,504.74x = 300,700,858,034.81
  5. Step 5: Solve for x
    x = 300,700,858,034.81/631,504.74
  6. Step 6: Final answer
    x = 476,165.64

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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.