Home / 1,218,243.72-1,681,151.64-674,379.84

Finding the Fourth Proportional to 1,218,243.72, 1,681,151.64 and 674,379.84

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Solution

The fourth proportional to 1,218,243.72, 1,681,151.64 and 674,379.84 is: 930,630.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,243.72 : 1,681,151.64 = 674,379.84 : x
  2. Step 2: Convert to fraction form
    1,218,243.72/1,681,151.64 = 674,379.84/x
  3. Step 3: Cross multiply
    1,218,243.72x = 1,681,151.64 × 674,379.84
  4. Step 4: Simplify right side
    1,218,243.72x = 1,133,734,773,998.94
  5. Step 5: Solve for x
    x = 1,133,734,773,998.94/1,218,243.72
  6. Step 6: Final answer
    x = 930,630.51

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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.