Home / 489,763.39-734,928.69-205,428.61

Finding the Fourth Proportional to 489,763.39, 734,928.69 and 205,428.61

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Solution

The fourth proportional to 489,763.39, 734,928.69 and 205,428.61 is: 308,261.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,763.39 : 734,928.69 = 205,428.61 : x
  2. Step 2: Convert to fraction form
    489,763.39/734,928.69 = 205,428.61/x
  3. Step 3: Cross multiply
    489,763.39x = 734,928.69 × 205,428.61
  4. Step 4: Simplify right side
    489,763.39x = 150,975,379,235.82
  5. Step 5: Solve for x
    x = 150,975,379,235.82/489,763.39
  6. Step 6: Final answer
    x = 308,261.87

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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.