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Finding the Fourth Proportional to 656,446.94, 905,896.88 and 354,640.94

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Solution

The fourth proportional to 656,446.94, 905,896.88 and 354,640.94 is: 489,404.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,446.94 : 905,896.88 = 354,640.94 : x
  2. Step 2: Convert to fraction form
    656,446.94/905,896.88 = 354,640.94/x
  3. Step 3: Cross multiply
    656,446.94x = 905,896.88 × 354,640.94
  4. Step 4: Simplify right side
    656,446.94x = 321,268,121,066.27
  5. Step 5: Solve for x
    x = 321,268,121,066.27/656,446.94
  6. Step 6: Final answer
    x = 489,404.55

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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.