Home / 1,818,693.88-2,509,858.20-991,812.72

Finding the Fourth Proportional to 1,818,693.88, 2,509,858.20 and 991,812.72

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Solution

The fourth proportional to 1,818,693.88, 2,509,858.20 and 991,812.72 is: 1,368,734.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,818,693.88 : 2,509,858.20 = 991,812.72 : x
  2. Step 2: Convert to fraction form
    1,818,693.88/2,509,858.20 = 991,812.72/x
  3. Step 3: Cross multiply
    1,818,693.88x = 2,509,858.20 × 991,812.72
  4. Step 4: Simplify right side
    1,818,693.88x = 2,489,309,288,156.30
  5. Step 5: Solve for x
    x = 2,489,309,288,156.30/1,818,693.88
  6. Step 6: Final answer
    x = 1,368,734.63

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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.