Home / 1,218,505.69-1,681,563.51-667,244.55

Finding the Fourth Proportional to 1,218,505.69, 1,681,563.51 and 667,244.55

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Solution

The fourth proportional to 1,218,505.69, 1,681,563.51 and 667,244.55 is: 920,811.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,505.69 : 1,681,563.51 = 667,244.55 : x
  2. Step 2: Convert to fraction form
    1,218,505.69/1,681,563.51 = 667,244.55/x
  3. Step 3: Cross multiply
    1,218,505.69x = 1,681,563.51 × 667,244.55
  4. Step 4: Simplify right side
    1,218,505.69x = 1,122,014,088,145.62
  5. Step 5: Solve for x
    x = 1,122,014,088,145.62/1,218,505.69
  6. Step 6: Final answer
    x = 920,811.53

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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.