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Finding the Fourth Proportional to 631,559.42, 871,541.72 and 345,073.36

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Solution

The fourth proportional to 631,559.42, 871,541.72 and 345,073.36 is: 476,195.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,559.42 : 871,541.72 = 345,073.36 : x
  2. Step 2: Convert to fraction form
    631,559.42/871,541.72 = 345,073.36/x
  3. Step 3: Cross multiply
    631,559.42x = 871,541.72 × 345,073.36
  4. Step 4: Simplify right side
    631,559.42x = 300,745,829,700.58
  5. Step 5: Solve for x
    x = 300,745,829,700.58/631,559.42
  6. Step 6: Final answer
    x = 476,195.62

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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.