Home / 1,210,616.82-1,670,251.32-781,182.36

Finding the Fourth Proportional to 1,210,616.82, 1,670,251.32 and 781,182.36

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Solution

The fourth proportional to 1,210,616.82, 1,670,251.32 and 781,182.36 is: 1,077,773.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,616.82 : 1,670,251.32 = 781,182.36 : x
  2. Step 2: Convert to fraction form
    1,210,616.82/1,670,251.32 = 781,182.36/x
  3. Step 3: Cross multiply
    1,210,616.82x = 1,670,251.32 × 781,182.36
  4. Step 4: Simplify right side
    1,210,616.82x = 1,304,770,867,950.72
  5. Step 5: Solve for x
    x = 1,304,770,867,950.72/1,210,616.82
  6. Step 6: Final answer
    x = 1,077,773.62

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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.