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Finding the Fourth Proportional to 656,295.28, 905,687.46 and 354,489.28

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Solution

The fourth proportional to 656,295.28, 905,687.46 and 354,489.28 is: 489,195.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,295.28 : 905,687.46 = 354,489.28 : x
  2. Step 2: Convert to fraction form
    656,295.28/905,687.46 = 354,489.28/x
  3. Step 3: Cross multiply
    656,295.28x = 905,687.46 × 354,489.28
  4. Step 4: Simplify right side
    656,295.28x = 321,056,495,600.43
  5. Step 5: Solve for x
    x = 321,056,495,600.43/656,295.28
  6. Step 6: Final answer
    x = 489,195.19

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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.