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Finding the Fourth Proportional to 489,763.95, 675,827.58 and 274,854.75

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Solution

The fourth proportional to 489,763.95, 675,827.58 and 274,854.75 is: 379,273.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,763.95 : 675,827.58 = 274,854.75 : x
  2. Step 2: Convert to fraction form
    489,763.95/675,827.58 = 274,854.75/x
  3. Step 3: Cross multiply
    489,763.95x = 675,827.58 × 274,854.75
  4. Step 4: Simplify right side
    489,763.95x = 185,754,420,544.01
  5. Step 5: Solve for x
    x = 185,754,420,544.01/489,763.95
  6. Step 6: Final answer
    x = 379,273.36

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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.