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Finding the Fourth Proportional to 631,630.44, 871,613.28 and 345,152.88

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Solution

The fourth proportional to 631,630.44, 871,613.28 and 345,152.88 is: 476,290.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,630.44 : 871,613.28 = 345,152.88 : x
  2. Step 2: Convert to fraction form
    631,630.44/871,613.28 = 345,152.88/x
  3. Step 3: Cross multiply
    631,630.44x = 871,613.28 × 345,152.88
  4. Step 4: Simplify right side
    631,630.44x = 300,839,833,838.25
  5. Step 5: Solve for x
    x = 300,839,833,838.25/631,630.44
  6. Step 6: Final answer
    x = 476,290.90

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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.