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Finding the Fourth Proportional to 631,710.72, 871,763.04 and 345,230.73

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Solution

The fourth proportional to 631,710.72, 871,763.04 and 345,230.73 is: 476,419.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,710.72 : 871,763.04 = 345,230.73 : x
  2. Step 2: Convert to fraction form
    631,710.72/871,763.04 = 345,230.73/x
  3. Step 3: Cross multiply
    631,710.72x = 871,763.04 × 345,230.73
  4. Step 4: Simplify right side
    631,710.72x = 300,959,390,686.22
  5. Step 5: Solve for x
    x = 300,959,390,686.22/631,710.72
  6. Step 6: Final answer
    x = 476,419.64

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Double scale
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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.