Home / 1,127,221.44-1,555,673.22-643,858.80

Finding the Fourth Proportional to 1,127,221.44, 1,555,673.22 and 643,858.80

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Solution

The fourth proportional to 1,127,221.44, 1,555,673.22 and 643,858.80 is: 888,586.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127,221.44 : 1,555,673.22 = 643,858.80 : x
  2. Step 2: Convert to fraction form
    1,127,221.44/1,555,673.22 = 643,858.80/x
  3. Step 3: Cross multiply
    1,127,221.44x = 1,555,673.22 × 643,858.80
  4. Step 4: Simplify right side
    1,127,221.44x = 1,001,633,892,621.34
  5. Step 5: Solve for x
    x = 1,001,633,892,621.34/1,127,221.44
  6. Step 6: Final answer
    x = 888,586.62

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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.