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Finding the Fourth Proportional to 489,989.73, 676,292.72 and 352,535.97

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Solution

The fourth proportional to 489,989.73, 676,292.72 and 352,535.97 is: 486,576.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,989.73 : 676,292.72 = 352,535.97 : x
  2. Step 2: Convert to fraction form
    489,989.73/676,292.72 = 352,535.97/x
  3. Step 3: Cross multiply
    489,989.73x = 676,292.72 × 352,535.97
  4. Step 4: Simplify right side
    489,989.73x = 238,417,508,286.46
  5. Step 5: Solve for x
    x = 238,417,508,286.46/489,989.73
  6. Step 6: Final answer
    x = 486,576.54

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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.