Home / 1,168,405.56-1,612,400.94-645,117.12

Finding the Fourth Proportional to 1,168,405.56, 1,612,400.94 and 645,117.12

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Solution

The fourth proportional to 1,168,405.56, 1,612,400.94 and 645,117.12 is: 890,262.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,168,405.56 : 1,612,400.94 = 645,117.12 : x
  2. Step 2: Convert to fraction form
    1,168,405.56/1,612,400.94 = 645,117.12/x
  3. Step 3: Cross multiply
    1,168,405.56x = 1,612,400.94 × 645,117.12
  4. Step 4: Simplify right side
    1,168,405.56x = 1,040,187,450,698.09
  5. Step 5: Solve for x
    x = 1,040,187,450,698.09/1,168,405.56
  6. Step 6: Final answer
    x = 890,262.33

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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.