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Finding the Fourth Proportional to 658,497.96, 987,068.97 and 258,976.80

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Solution

The fourth proportional to 658,497.96, 987,068.97 and 258,976.80 is: 388,198.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,497.96 : 987,068.97 = 258,976.80 : x
  2. Step 2: Convert to fraction form
    658,497.96/987,068.97 = 258,976.80/x
  3. Step 3: Cross multiply
    658,497.96x = 987,068.97 × 258,976.80
  4. Step 4: Simplify right side
    658,497.96x = 255,627,963,229.90
  5. Step 5: Solve for x
    x = 255,627,963,229.90/658,497.96
  6. Step 6: Final answer
    x = 388,198.57

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1.5x scale

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.