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Finding the Fourth Proportional to 631,172.13, 871,020.75 and 344,692.23

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Solution

The fourth proportional to 631,172.13, 871,020.75 and 344,692.23 is: 475,677.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,172.13 : 871,020.75 = 344,692.23 : x
  2. Step 2: Convert to fraction form
    631,172.13/871,020.75 = 344,692.23/x
  3. Step 3: Cross multiply
    631,172.13x = 871,020.75 × 344,692.23
  4. Step 4: Simplify right side
    631,172.13x = 300,234,084,693.77
  5. Step 5: Solve for x
    x = 300,234,084,693.77/631,172.13
  6. Step 6: Final answer
    x = 475,677.03

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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.