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Finding the Fourth Proportional to 631,520.18, 871,487.55 and 345,034.10

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Solution

The fourth proportional to 631,520.18, 871,487.55 and 345,034.10 is: 476,141.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,520.18 : 871,487.55 = 345,034.10 : x
  2. Step 2: Convert to fraction form
    631,520.18/871,487.55 = 345,034.10/x
  3. Step 3: Cross multiply
    631,520.18x = 871,487.55 × 345,034.10
  4. Step 4: Simplify right side
    631,520.18x = 300,692,922,475.46
  5. Step 5: Solve for x
    x = 300,692,922,475.46/631,520.18
  6. Step 6: Final answer
    x = 476,141.43

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1.5x scale

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.