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Finding the Fourth Proportional to 489,868.29, 676,017.73 and 275,008.77

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Solution

The fourth proportional to 489,868.29, 676,017.73 and 275,008.77 is: 379,511.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,868.29 : 676,017.73 = 275,008.77 : x
  2. Step 2: Convert to fraction form
    489,868.29/676,017.73 = 275,008.77/x
  3. Step 3: Cross multiply
    489,868.29x = 676,017.73 × 275,008.77
  4. Step 4: Simplify right side
    489,868.29x = 185,910,804,769.25
  5. Step 5: Solve for x
    x = 185,910,804,769.25/489,868.29
  6. Step 6: Final answer
    x = 379,511.82

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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.