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Finding the Fourth Proportional to 631,545.08, 871,532.98 and 345,065.17

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Solution

The fourth proportional to 631,545.08, 871,532.98 and 345,065.17 is: 476,190.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,545.08 : 871,532.98 = 345,065.17 : x
  2. Step 2: Convert to fraction form
    631,545.08/871,532.98 = 345,065.17/x
  3. Step 3: Cross multiply
    631,545.08x = 871,532.98 × 345,065.17
  4. Step 4: Simplify right side
    631,545.08x = 300,735,675,904.31
  5. Step 5: Solve for x
    x = 300,735,675,904.31/631,545.08
  6. Step 6: Final answer
    x = 476,190.36

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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.