Home / 1,218,563.91-1,681,501.44-674,679.78

Finding the Fourth Proportional to 1,218,563.91, 1,681,501.44 and 674,679.78

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Solution

The fourth proportional to 1,218,563.91, 1,681,501.44 and 674,679.78 is: 930,993.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,563.91 : 1,681,501.44 = 674,679.78 : x
  2. Step 2: Convert to fraction form
    1,218,563.91/1,681,501.44 = 674,679.78/x
  3. Step 3: Cross multiply
    1,218,563.91x = 1,681,501.44 × 674,679.78
  4. Step 4: Simplify right side
    1,218,563.91x = 1,134,475,021,608.88
  5. Step 5: Solve for x
    x = 1,134,475,021,608.88/1,218,563.91
  6. Step 6: Final answer
    x = 930,993.45

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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.