Home / 1,931,780.21-2,665,723.32-1,072,272.80

Finding the Fourth Proportional to 1,931,780.21, 2,665,723.32 and 1,072,272.80

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Solution

The fourth proportional to 1,931,780.21, 2,665,723.32 and 1,072,272.80 is: 1,479,662.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,931,780.21 : 2,665,723.32 = 1,072,272.80 : x
  2. Step 2: Convert to fraction form
    1,931,780.21/2,665,723.32 = 1,072,272.80/x
  3. Step 3: Cross multiply
    1,931,780.21x = 2,665,723.32 × 1,072,272.80
  4. Step 4: Simplify right side
    1,931,780.21x = 2,858,382,595,033.08
  5. Step 5: Solve for x
    x = 2,858,382,595,033.08/1,931,780.21
  6. Step 6: Final answer
    x = 1,479,662.43

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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.