Home / 1,987,979.60-2,982,466.20-640,269.20

Finding the Fourth Proportional to 1,987,979.60, 2,982,466.20 and 640,269.20

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Solution

The fourth proportional to 1,987,979.60, 2,982,466.20 and 640,269.20 is: 960,563.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,979.60 : 2,982,466.20 = 640,269.20 : x
  2. Step 2: Convert to fraction form
    1,987,979.60/2,982,466.20 = 640,269.20/x
  3. Step 3: Cross multiply
    1,987,979.60x = 2,982,466.20 × 640,269.20
  4. Step 4: Simplify right side
    1,987,979.60x = 1,909,581,247,901.04
  5. Step 5: Solve for x
    x = 1,909,581,247,901.04/1,987,979.60
  6. Step 6: Final answer
    x = 960,563.80

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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.