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Finding the Fourth Proportional to 489,710.20, 675,800.08 and 274,850.28

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Solution

The fourth proportional to 489,710.20, 675,800.08 and 274,850.28 is: 379,293.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,710.20 : 675,800.08 = 274,850.28 : x
  2. Step 2: Convert to fraction form
    489,710.20/675,800.08 = 274,850.28/x
  3. Step 3: Cross multiply
    489,710.20x = 675,800.08 × 274,850.28
  4. Step 4: Simplify right side
    489,710.20x = 185,743,841,212.02
  5. Step 5: Solve for x
    x = 185,743,841,212.02/489,710.20
  6. Step 6: Final answer
    x = 379,293.39

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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.