Home / 1,240,791.82-1,711,856.64-811,323.34

Finding the Fourth Proportional to 1,240,791.82, 1,711,856.64 and 811,323.34

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Solution

The fourth proportional to 1,240,791.82, 1,711,856.64 and 811,323.34 is: 1,119,341.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,791.82 : 1,711,856.64 = 811,323.34 : x
  2. Step 2: Convert to fraction form
    1,240,791.82/1,711,856.64 = 811,323.34/x
  3. Step 3: Cross multiply
    1,240,791.82x = 1,711,856.64 × 811,323.34
  4. Step 4: Simplify right side
    1,240,791.82x = 1,388,869,246,765.98
  5. Step 5: Solve for x
    x = 1,388,869,246,765.98/1,240,791.82
  6. Step 6: Final answer
    x = 1,119,341.07

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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.