Home / 1,992,865.71-2,989,773.11-645,028.55

Finding the Fourth Proportional to 1,992,865.71, 2,989,773.11 and 645,028.55

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Solution

The fourth proportional to 1,992,865.71, 2,989,773.11 and 645,028.55 is: 967,696.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992,865.71 : 2,989,773.11 = 645,028.55 : x
  2. Step 2: Convert to fraction form
    1,992,865.71/2,989,773.11 = 645,028.55/x
  3. Step 3: Cross multiply
    1,992,865.71x = 2,989,773.11 × 645,028.55
  4. Step 4: Simplify right side
    1,992,865.71x = 1,928,489,000,636.00
  5. Step 5: Solve for x
    x = 1,928,489,000,636.00/1,992,865.71
  6. Step 6: Final answer
    x = 967,696.41

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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.