Home / 1,115,147.62-1,538,979.82-631,716.74

Finding the Fourth Proportional to 1,115,147.62, 1,538,979.82 and 631,716.74

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Solution

The fourth proportional to 1,115,147.62, 1,538,979.82 and 631,716.74 is: 871,812.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,147.62 : 1,538,979.82 = 631,716.74 : x
  2. Step 2: Convert to fraction form
    1,115,147.62/1,538,979.82 = 631,716.74/x
  3. Step 3: Cross multiply
    1,115,147.62x = 1,538,979.82 × 631,716.74
  4. Step 4: Simplify right side
    1,115,147.62x = 972,199,311,313.17
  5. Step 5: Solve for x
    x = 972,199,311,313.17/1,115,147.62
  6. Step 6: Final answer
    x = 871,812.21

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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.