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Finding the Fourth Proportional to 631,521.24, 871,511.85 and 345,059.10

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Solution

The fourth proportional to 631,521.24, 871,511.85 and 345,059.10 is: 476,188.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,521.24 : 871,511.85 = 345,059.10 : x
  2. Step 2: Convert to fraction form
    631,521.24/871,511.85 = 345,059.10/x
  3. Step 3: Cross multiply
    631,521.24x = 871,511.85 × 345,059.10
  4. Step 4: Simplify right side
    631,521.24x = 300,723,094,600.34
  5. Step 5: Solve for x
    x = 300,723,094,600.34/631,521.24
  6. Step 6: Final answer
    x = 476,188.41

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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.