Home / 1,189,338.39-1,642,649.27-783,255.30

Finding the Fourth Proportional to 1,189,338.39, 1,642,649.27 and 783,255.30

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Solution

The fourth proportional to 1,189,338.39, 1,642,649.27 and 783,255.30 is: 1,081,789.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,338.39 : 1,642,649.27 = 783,255.30 : x
  2. Step 2: Convert to fraction form
    1,189,338.39/1,642,649.27 = 783,255.30/x
  3. Step 3: Cross multiply
    1,189,338.39x = 1,642,649.27 × 783,255.30
  4. Step 4: Simplify right side
    1,189,338.39x = 1,286,613,742,852.35
  5. Step 5: Solve for x
    x = 1,286,613,742,852.35/1,189,338.39
  6. Step 6: Final answer
    x = 1,081,789.47

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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.