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Finding the Fourth Proportional to 631,601.55, 871,599.69 and 345,115.08

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Solution

The fourth proportional to 631,601.55, 871,599.69 and 345,115.08 is: 476,253.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,601.55 : 871,599.69 = 345,115.08 : x
  2. Step 2: Convert to fraction form
    631,601.55/871,599.69 = 345,115.08/x
  3. Step 3: Cross multiply
    631,601.55x = 871,599.69 × 345,115.08
  4. Step 4: Simplify right side
    631,601.55x = 300,802,196,742.33
  5. Step 5: Solve for x
    x = 300,802,196,742.33/631,601.55
  6. Step 6: Final answer
    x = 476,253.10

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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.