Home / 1,388,103.16-1,915,546.38-767,931.22

Finding the Fourth Proportional to 1,388,103.16, 1,915,546.38 and 767,931.22

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Solution

The fourth proportional to 1,388,103.16, 1,915,546.38 and 767,931.22 is: 1,059,725.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,103.16 : 1,915,546.38 = 767,931.22 : x
  2. Step 2: Convert to fraction form
    1,388,103.16/1,915,546.38 = 767,931.22/x
  3. Step 3: Cross multiply
    1,388,103.16x = 1,915,546.38 × 767,931.22
  4. Step 4: Simplify right side
    1,388,103.16x = 1,471,007,868,559.98
  5. Step 5: Solve for x
    x = 1,471,007,868,559.98/1,388,103.16
  6. Step 6: Final answer
    x = 1,059,725.18

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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.