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Finding the Fourth Proportional to 631,760.39, 871,816.39 and 345,282.52

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Solution

The fourth proportional to 631,760.39, 871,816.39 and 345,282.52 is: 476,482.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,760.39 : 871,816.39 = 345,282.52 : x
  2. Step 2: Convert to fraction form
    631,760.39/871,816.39 = 345,282.52/x
  3. Step 3: Cross multiply
    631,760.39x = 871,816.39 × 345,282.52
  4. Step 4: Simplify right side
    631,760.39x = 301,022,960,116.50
  5. Step 5: Solve for x
    x = 301,022,960,116.50/631,760.39
  6. Step 6: Final answer
    x = 476,482.80

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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.