Home / 1,115,022.51-1,538,620.11-631,491.39

Finding the Fourth Proportional to 1,115,022.51, 1,538,620.11 and 631,491.39

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Solution

The fourth proportional to 1,115,022.51, 1,538,620.11 and 631,491.39 is: 871,395.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,022.51 : 1,538,620.11 = 631,491.39 : x
  2. Step 2: Convert to fraction form
    1,115,022.51/1,538,620.11 = 631,491.39/x
  3. Step 3: Cross multiply
    1,115,022.51x = 1,538,620.11 × 631,491.39
  4. Step 4: Simplify right side
    1,115,022.51x = 971,625,351,945.85
  5. Step 5: Solve for x
    x = 971,625,351,945.85/1,115,022.51
  6. Step 6: Final answer
    x = 871,395.28

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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.