Home / 991,850.44-1,486,868.46-430,682.44

Finding the Fourth Proportional to 991,850.44, 1,486,868.46 and 430,682.44

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Solution

The fourth proportional to 991,850.44, 1,486,868.46 and 430,682.44 is: 645,629.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,850.44 : 1,486,868.46 = 430,682.44 : x
  2. Step 2: Convert to fraction form
    991,850.44/1,486,868.46 = 430,682.44/x
  3. Step 3: Cross multiply
    991,850.44x = 1,486,868.46 × 430,682.44
  4. Step 4: Simplify right side
    991,850.44x = 640,368,136,311.84
  5. Step 5: Solve for x
    x = 640,368,136,311.84/991,850.44
  6. Step 6: Final answer
    x = 645,629.73

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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.