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Finding the Fourth Proportional to 631,630.69, 871,652.68 and 345,150.82

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Solution

The fourth proportional to 631,630.69, 871,652.68 and 345,150.82 is: 476,309.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,630.69 : 871,652.68 = 345,150.82 : x
  2. Step 2: Convert to fraction form
    631,630.69/871,652.68 = 345,150.82/x
  3. Step 3: Cross multiply
    631,630.69x = 871,652.68 × 345,150.82
  4. Step 4: Simplify right side
    631,630.69x = 300,851,635,531.44
  5. Step 5: Solve for x
    x = 300,851,635,531.44/631,630.69
  6. Step 6: Final answer
    x = 476,309.40

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Half scale
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Double scale
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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.