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Finding the Fourth Proportional to 489,521.79, 675,551.71 and 274,677.74

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Solution

The fourth proportional to 489,521.79, 675,551.71 and 274,677.74 is: 379,061.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,521.79 : 675,551.71 = 274,677.74 : x
  2. Step 2: Convert to fraction form
    489,521.79/675,551.71 = 274,677.74/x
  3. Step 3: Cross multiply
    489,521.79x = 675,551.71 × 274,677.74
  4. Step 4: Simplify right side
    489,521.79x = 185,559,016,955.94
  5. Step 5: Solve for x
    x = 185,559,016,955.94/489,521.79
  6. Step 6: Final answer
    x = 379,061.81

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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.