Home / 1,380,138.71-1,904,570.88-768,290.36

Finding the Fourth Proportional to 1,380,138.71, 1,904,570.88 and 768,290.36

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Solution

The fourth proportional to 1,380,138.71, 1,904,570.88 and 768,290.36 is: 1,060,229.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,138.71 : 1,904,570.88 = 768,290.36 : x
  2. Step 2: Convert to fraction form
    1,380,138.71/1,904,570.88 = 768,290.36/x
  3. Step 3: Cross multiply
    1,380,138.71x = 1,904,570.88 × 768,290.36
  4. Step 4: Simplify right side
    1,380,138.71x = 1,463,263,447,040.72
  5. Step 5: Solve for x
    x = 1,463,263,447,040.72/1,380,138.71
  6. Step 6: Final answer
    x = 1,060,229.26

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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.