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Finding the Fourth Proportional to 486,793, 671,774.34 and 274,825

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Solution

The fourth proportional to 486,793, 671,774.34 and 274,825 is: 379,258.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,793 : 671,774.34 = 274,825 : x
  2. Step 2: Convert to fraction form
    486,793/671,774.34 = 274,825/x
  3. Step 3: Cross multiply
    486,793x = 671,774.34 × 274,825
  4. Step 4: Simplify right side
    486,793x = 184,620,382,990.50
  5. Step 5: Solve for x
    x = 184,620,382,990.50/486,793
  6. Step 6: Final answer
    x = 379,258.50

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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.