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Finding the Fourth Proportional to 631,283.64, 871,215.90 and 359,351.66

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Solution

The fourth proportional to 631,283.64, 871,215.90 and 359,351.66 is: 495,930.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,283.64 : 871,215.90 = 359,351.66 : x
  2. Step 2: Convert to fraction form
    631,283.64/871,215.90 = 359,351.66/x
  3. Step 3: Cross multiply
    631,283.64x = 871,215.90 × 359,351.66
  4. Step 4: Simplify right side
    631,283.64x = 313,072,879,883.39
  5. Step 5: Solve for x
    x = 313,072,879,883.39/631,283.64
  6. Step 6: Final answer
    x = 495,930.61

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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.