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Finding the Fourth Proportional to 631,174.47, 871,027.69 and 344,702.98

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Solution

The fourth proportional to 631,174.47, 871,027.69 and 344,702.98 is: 475,693.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,174.47 : 871,027.69 = 344,702.98 : x
  2. Step 2: Convert to fraction form
    631,174.47/871,027.69 = 344,702.98/x
  3. Step 3: Cross multiply
    631,174.47x = 871,027.69 × 344,702.98
  4. Step 4: Simplify right side
    631,174.47x = 300,245,838,682.00
  5. Step 5: Solve for x
    x = 300,245,838,682.00/631,174.47
  6. Step 6: Final answer
    x = 475,693.89

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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.