Home / 1,987,581.60-2,981,372.40-657,885.60

Finding the Fourth Proportional to 1,987,581.60, 2,981,372.40 and 657,885.60

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Solution

The fourth proportional to 1,987,581.60, 2,981,372.40 and 657,885.60 is: 986,828.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,581.60 : 2,981,372.40 = 657,885.60 : x
  2. Step 2: Convert to fraction form
    1,987,581.60/2,981,372.40 = 657,885.60/x
  3. Step 3: Cross multiply
    1,987,581.60x = 2,981,372.40 × 657,885.60
  4. Step 4: Simplify right side
    1,987,581.60x = 1,961,401,970,197.44
  5. Step 5: Solve for x
    x = 1,961,401,970,197.44/1,987,581.60
  6. Step 6: Final answer
    x = 986,828.40

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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.