Home / 1,218,218.94-1,681,121.79-674,343.23

Finding the Fourth Proportional to 1,218,218.94, 1,681,121.79 and 674,343.23

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Solution

The fourth proportional to 1,218,218.94, 1,681,121.79 and 674,343.23 is: 930,582.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,218.94 : 1,681,121.79 = 674,343.23 : x
  2. Step 2: Convert to fraction form
    1,218,218.94/1,681,121.79 = 674,343.23/x
  3. Step 3: Cross multiply
    1,218,218.94x = 1,681,121.79 × 674,343.23
  4. Step 4: Simplify right side
    1,218,218.94x = 1,133,653,089,486.37
  5. Step 5: Solve for x
    x = 1,133,653,089,486.37/1,218,218.94
  6. Step 6: Final answer
    x = 930,582.39

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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.