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Finding the Fourth Proportional to 656,297.28, 905,690.22 and 354,491.28

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Solution

The fourth proportional to 656,297.28, 905,690.22 and 354,491.28 is: 489,197.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,297.28 : 905,690.22 = 354,491.28 : x
  2. Step 2: Convert to fraction form
    656,297.28/905,690.22 = 354,491.28/x
  3. Step 3: Cross multiply
    656,297.28x = 905,690.22 × 354,491.28
  4. Step 4: Simplify right side
    656,297.28x = 321,059,285,371.28
  5. Step 5: Solve for x
    x = 321,059,285,371.28/656,297.28
  6. Step 6: Final answer
    x = 489,197.95

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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.