Home / 1,378,352.72-1,901,847.92-805,282.20

Finding the Fourth Proportional to 1,378,352.72, 1,901,847.92 and 805,282.20

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Solution

The fourth proportional to 1,378,352.72, 1,901,847.92 and 805,282.20 is: 1,111,126.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,352.72 : 1,901,847.92 = 805,282.20 : x
  2. Step 2: Convert to fraction form
    1,378,352.72/1,901,847.92 = 805,282.20/x
  3. Step 3: Cross multiply
    1,378,352.72x = 1,901,847.92 × 805,282.20
  4. Step 4: Simplify right side
    1,378,352.72x = 1,531,524,277,083.02
  5. Step 5: Solve for x
    x = 1,531,524,277,083.02/1,378,352.72
  6. Step 6: Final answer
    x = 1,111,126.53

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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.