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Finding the Fourth Proportional to 550,391.30, 758,836.89 and 356,456.37

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Solution

The fourth proportional to 550,391.30, 758,836.89 and 356,456.37 is: 491,454.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,391.30 : 758,836.89 = 356,456.37 : x
  2. Step 2: Convert to fraction form
    550,391.30/758,836.89 = 356,456.37/x
  3. Step 3: Cross multiply
    550,391.30x = 758,836.89 × 356,456.37
  4. Step 4: Simplify right side
    550,391.30x = 270,492,243,231.49
  5. Step 5: Solve for x
    x = 270,492,243,231.49/550,391.30
  6. Step 6: Final answer
    x = 491,454.44

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1.5x scale

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.