Home / 1,191,040.39-1,643,606.87-667,716.32

Finding the Fourth Proportional to 1,191,040.39, 1,643,606.87 and 667,716.32

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Solution

The fourth proportional to 1,191,040.39, 1,643,606.87 and 667,716.32 is: 921,432.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,040.39 : 1,643,606.87 = 667,716.32 : x
  2. Step 2: Convert to fraction form
    1,191,040.39/1,643,606.87 = 667,716.32/x
  3. Step 3: Cross multiply
    1,191,040.39x = 1,643,606.87 × 667,716.32
  4. Step 4: Simplify right side
    1,191,040.39x = 1,097,463,128,788.86
  5. Step 5: Solve for x
    x = 1,097,463,128,788.86/1,191,040.39
  6. Step 6: Final answer
    x = 921,432.34

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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.