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Finding the Fourth Proportional to 3,990,470.81, 5,985,706.30 and 957,836.67

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Solution

The fourth proportional to 3,990,470.81, 5,985,706.30 and 957,836.67 is: 1,436,755.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990,470.81 : 5,985,706.30 = 957,836.67 : x
  2. Step 2: Convert to fraction form
    3,990,470.81/5,985,706.30 = 957,836.67/x
  3. Step 3: Cross multiply
    3,990,470.81x = 5,985,706.30 × 957,836.67
  4. Step 4: Simplify right side
    3,990,470.81x = 5,733,328,989,990.02
  5. Step 5: Solve for x
    x = 5,733,328,989,990.02/3,990,470.81
  6. Step 6: Final answer
    x = 1,436,755.03

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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.