Home / 1,115,041.88-1,538,634.37-618,313.28

Finding the Fourth Proportional to 1,115,041.88, 1,538,634.37 and 618,313.28

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Solution

The fourth proportional to 1,115,041.88, 1,538,634.37 and 618,313.28 is: 853,203.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,041.88 : 1,538,634.37 = 618,313.28 : x
  2. Step 2: Convert to fraction form
    1,115,041.88/1,538,634.37 = 618,313.28/x
  3. Step 3: Cross multiply
    1,115,041.88x = 1,538,634.37 × 618,313.28
  4. Step 4: Simplify right side
    1,115,041.88x = 951,358,064,035.43
  5. Step 5: Solve for x
    x = 951,358,064,035.43/1,115,041.88
  6. Step 6: Final answer
    x = 853,203.89

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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.