Home / 1,297,059.28-1,790,419.46-780,837.18

Finding the Fourth Proportional to 1,297,059.28, 1,790,419.46 and 780,837.18

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Solution

The fourth proportional to 1,297,059.28, 1,790,419.46 and 780,837.18 is: 1,077,842.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297,059.28 : 1,790,419.46 = 780,837.18 : x
  2. Step 2: Convert to fraction form
    1,297,059.28/1,790,419.46 = 780,837.18/x
  3. Step 3: Cross multiply
    1,297,059.28x = 1,790,419.46 × 780,837.18
  4. Step 4: Simplify right side
    1,297,059.28x = 1,398,026,082,163.52
  5. Step 5: Solve for x
    x = 1,398,026,082,163.52/1,297,059.28
  6. Step 6: Final answer
    x = 1,077,842.86

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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.