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Finding the Fourth Proportional to 631,545.39, 871,522.45 and 345,059.33

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Solution

The fourth proportional to 631,545.39, 871,522.45 and 345,059.33 is: 476,176.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,545.39 : 871,522.45 = 345,059.33 : x
  2. Step 2: Convert to fraction form
    631,545.39/871,522.45 = 345,059.33/x
  3. Step 3: Cross multiply
    631,545.39x = 871,522.45 × 345,059.33
  4. Step 4: Simplify right side
    631,545.39x = 300,726,947,456.70
  5. Step 5: Solve for x
    x = 300,726,947,456.70/631,545.39
  6. Step 6: Final answer
    x = 476,176.30

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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.