Home / 1,123,649.13-1,550,255.99-639,871.23

Finding the Fourth Proportional to 1,123,649.13, 1,550,255.99 and 639,871.23

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Solution

The fourth proportional to 1,123,649.13, 1,550,255.99 and 639,871.23 is: 882,806.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,649.13 : 1,550,255.99 = 639,871.23 : x
  2. Step 2: Convert to fraction form
    1,123,649.13/1,550,255.99 = 639,871.23/x
  3. Step 3: Cross multiply
    1,123,649.13x = 1,550,255.99 × 639,871.23
  4. Step 4: Simplify right side
    1,123,649.13x = 991,964,203,936.81
  5. Step 5: Solve for x
    x = 991,964,203,936.81/1,123,649.13
  6. Step 6: Final answer
    x = 882,806.01

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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.