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Finding the Fourth Proportional to 3,990,470.78, 5,985,706.25 and 957,836.64

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Solution

The fourth proportional to 3,990,470.78, 5,985,706.25 and 957,836.64 is: 1,436,754.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990,470.78 : 5,985,706.25 = 957,836.64 : x
  2. Step 2: Convert to fraction form
    3,990,470.78/5,985,706.25 = 957,836.64/x
  3. Step 3: Cross multiply
    3,990,470.78x = 5,985,706.25 × 957,836.64
  4. Step 4: Simplify right side
    3,990,470.78x = 5,733,328,762,527
  5. Step 5: Solve for x
    x = 5,733,328,762,527/3,990,470.78
  6. Step 6: Final answer
    x = 1,436,754.98

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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.