Home / 1,687,706.37-2,329,049.44-990,404.57

Finding the Fourth Proportional to 1,687,706.37, 2,329,049.44 and 990,404.57

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Solution

The fourth proportional to 1,687,706.37, 2,329,049.44 and 990,404.57 is: 1,366,766.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687,706.37 : 2,329,049.44 = 990,404.57 : x
  2. Step 2: Convert to fraction form
    1,687,706.37/2,329,049.44 = 990,404.57/x
  3. Step 3: Cross multiply
    1,687,706.37x = 2,329,049.44 × 990,404.57
  4. Step 4: Simplify right side
    1,687,706.37x = 2,306,701,209,131.94
  5. Step 5: Solve for x
    x = 2,306,701,209,131.94/1,687,706.37
  6. Step 6: Final answer
    x = 1,366,766.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.