Home / 1,218,506.69-1,681,564.89-667,245.55

Finding the Fourth Proportional to 1,218,506.69, 1,681,564.89 and 667,245.55

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Solution

The fourth proportional to 1,218,506.69, 1,681,564.89 and 667,245.55 is: 920,812.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,506.69 : 1,681,564.89 = 667,245.55 : x
  2. Step 2: Convert to fraction form
    1,218,506.69/1,681,564.89 = 667,245.55/x
  3. Step 3: Cross multiply
    1,218,506.69x = 1,681,564.89 × 667,245.55
  4. Step 4: Simplify right side
    1,218,506.69x = 1,122,016,689,888.74
  5. Step 5: Solve for x
    x = 1,122,016,689,888.74/1,218,506.69
  6. Step 6: Final answer
    x = 920,812.91

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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.