Home / 1,381,930.32-1,907,218.24-770,138.94

Finding the Fourth Proportional to 1,381,930.32, 1,907,218.24 and 770,138.94

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Solution

The fourth proportional to 1,381,930.32, 1,907,218.24 and 770,138.94 is: 1,062,877.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381,930.32 : 1,907,218.24 = 770,138.94 : x
  2. Step 2: Convert to fraction form
    1,381,930.32/1,907,218.24 = 770,138.94/x
  3. Step 3: Cross multiply
    1,381,930.32x = 1,907,218.24 × 770,138.94
  4. Step 4: Simplify right side
    1,381,930.32x = 1,468,823,033,702.27
  5. Step 5: Solve for x
    x = 1,468,823,033,702.27/1,381,930.32
  6. Step 6: Final answer
    x = 1,062,877.78

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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.