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Finding the Fourth Proportional to 631,610.55, 871,612.11 and 345,124.53

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Solution

The fourth proportional to 631,610.55, 871,612.11 and 345,124.53 is: 476,266.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,610.55 : 871,612.11 = 345,124.53 : x
  2. Step 2: Convert to fraction form
    631,610.55/871,612.11 = 345,124.53/x
  3. Step 3: Cross multiply
    631,610.55x = 871,612.11 × 345,124.53
  4. Step 4: Simplify right side
    631,610.55x = 300,814,719,806.06
  5. Step 5: Solve for x
    x = 300,814,719,806.06/631,610.55
  6. Step 6: Final answer
    x = 476,266.14

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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.