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Finding the Fourth Proportional to 489,756.93, 675,812.70 and 274,920.63

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Solution

The fourth proportional to 489,756.93, 675,812.70 and 274,920.63 is: 379,361.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,756.93 : 675,812.70 = 274,920.63 : x
  2. Step 2: Convert to fraction form
    489,756.93/675,812.70 = 274,920.63/x
  3. Step 3: Cross multiply
    489,756.93x = 675,812.70 × 274,920.63
  4. Step 4: Simplify right side
    489,756.93x = 185,794,853,246.00
  5. Step 5: Solve for x
    x = 185,794,853,246.00/489,756.93
  6. Step 6: Final answer
    x = 379,361.36

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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.