Home / 1,388,550.78-1,916,344.31-799,870.57

Finding the Fourth Proportional to 1,388,550.78, 1,916,344.31 and 799,870.57

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Solution

The fourth proportional to 1,388,550.78, 1,916,344.31 and 799,870.57 is: 1,103,904.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,550.78 : 1,916,344.31 = 799,870.57 : x
  2. Step 2: Convert to fraction form
    1,388,550.78/1,916,344.31 = 799,870.57/x
  3. Step 3: Cross multiply
    1,388,550.78x = 1,916,344.31 × 799,870.57
  4. Step 4: Simplify right side
    1,388,550.78x = 1,532,827,415,555.96
  5. Step 5: Solve for x
    x = 1,532,827,415,555.96/1,388,550.78
  6. Step 6: Final answer
    x = 1,103,904.47

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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.