Home / 862,928-1,190,789.42-495,320.22

Finding the Fourth Proportional to 862,928, 1,190,789.42 and 495,320.22

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Solution

The fourth proportional to 862,928, 1,190,789.42 and 495,320.22 is: 683,512.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,928 : 1,190,789.42 = 495,320.22 : x
  2. Step 2: Convert to fraction form
    862,928/1,190,789.42 = 495,320.22/x
  3. Step 3: Cross multiply
    862,928x = 1,190,789.42 × 495,320.22
  4. Step 4: Simplify right side
    862,928x = 589,822,077,488.07
  5. Step 5: Solve for x
    x = 589,822,077,488.07/862,928
  6. Step 6: Final answer
    x = 683,512.50

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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.