Home / 1,112,136.60-1,668,204.90-639,744.60

Finding the Fourth Proportional to 1,112,136.60, 1,668,204.90 and 639,744.60

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Solution

The fourth proportional to 1,112,136.60, 1,668,204.90 and 639,744.60 is: 959,616.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112,136.60 : 1,668,204.90 = 639,744.60 : x
  2. Step 2: Convert to fraction form
    1,112,136.60/1,668,204.90 = 639,744.60/x
  3. Step 3: Cross multiply
    1,112,136.60x = 1,668,204.90 × 639,744.60
  4. Step 4: Simplify right side
    1,112,136.60x = 1,067,225,076,468.54
  5. Step 5: Solve for x
    x = 1,067,225,076,468.54/1,112,136.60
  6. Step 6: Final answer
    x = 959,616.90

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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.