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Finding the Fourth Proportional to 489,517.71, 734,487.06 and 265,038.57

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Solution

The fourth proportional to 489,517.71, 734,487.06 and 265,038.57 is: 397,671.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,517.71 : 734,487.06 = 265,038.57 : x
  2. Step 2: Convert to fraction form
    489,517.71/734,487.06 = 265,038.57/x
  3. Step 3: Cross multiply
    489,517.71x = 734,487.06 × 265,038.57
  4. Step 4: Simplify right side
    489,517.71x = 194,667,400,065.90
  5. Step 5: Solve for x
    x = 194,667,400,065.90/489,517.71
  6. Step 6: Final answer
    x = 397,671.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.