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Finding the Fourth Proportional to 631,390.17, 871,307.51 and 344,902.89

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Solution

The fourth proportional to 631,390.17, 871,307.51 and 344,902.89 is: 475,960.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,390.17 : 871,307.51 = 344,902.89 : x
  2. Step 2: Convert to fraction form
    631,390.17/871,307.51 = 344,902.89/x
  3. Step 3: Cross multiply
    631,390.17x = 871,307.51 × 344,902.89
  4. Step 4: Simplify right side
    631,390.17x = 300,516,476,553.19
  5. Step 5: Solve for x
    x = 300,516,476,553.19/631,390.17
  6. Step 6: Final answer
    x = 475,960.02

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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.