Home / 1,991,218.32-2,986,821.36-495,310.32

Finding the Fourth Proportional to 1,991,218.32, 2,986,821.36 and 495,310.32

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Solution

The fourth proportional to 1,991,218.32, 2,986,821.36 and 495,310.32 is: 742,963.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,218.32 : 2,986,821.36 = 495,310.32 : x
  2. Step 2: Convert to fraction form
    1,991,218.32/2,986,821.36 = 495,310.32/x
  3. Step 3: Cross multiply
    1,991,218.32x = 2,986,821.36 × 495,310.32
  4. Step 4: Simplify right side
    1,991,218.32x = 1,479,403,443,604.44
  5. Step 5: Solve for x
    x = 1,479,403,443,604.44/1,991,218.32
  6. Step 6: Final answer
    x = 742,963.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.