Home / 1,431,845.28-1,975,947.84-787,276.44

Finding the Fourth Proportional to 1,431,845.28, 1,975,947.84 and 787,276.44

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Solution

The fourth proportional to 1,431,845.28, 1,975,947.84 and 787,276.44 is: 1,086,442.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,845.28 : 1,975,947.84 = 787,276.44 : x
  2. Step 2: Convert to fraction form
    1,431,845.28/1,975,947.84 = 787,276.44/x
  3. Step 3: Cross multiply
    1,431,845.28x = 1,975,947.84 × 787,276.44
  4. Step 4: Simplify right side
    1,431,845.28x = 1,555,617,181,100.89
  5. Step 5: Solve for x
    x = 1,555,617,181,100.89/1,431,845.28
  6. Step 6: Final answer
    x = 1,086,442.23

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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.