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Finding the Fourth Proportional to 656,328, 905,733 and 354,522

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Solution

The fourth proportional to 656,328, 905,733 and 354,522 is: 489,240.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,328 : 905,733 = 354,522 : x
  2. Step 2: Convert to fraction form
    656,328/905,733 = 354,522/x
  3. Step 3: Cross multiply
    656,328x = 905,733 × 354,522
  4. Step 4: Simplify right side
    656,328x = 321,102,274,626
  5. Step 5: Solve for x
    x = 321,102,274,626/656,328
  6. Step 6: Final answer
    x = 489,240.55

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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.