Home / 1,987,913.10-2,979,110.91-905,781.07

Finding the Fourth Proportional to 1,987,913.10, 2,979,110.91 and 905,781.07

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Solution

The fourth proportional to 1,987,913.10, 2,979,110.91 and 905,781.07 is: 1,357,414.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,913.10 : 2,979,110.91 = 905,781.07 : x
  2. Step 2: Convert to fraction form
    1,987,913.10/2,979,110.91 = 905,781.07/x
  3. Step 3: Cross multiply
    1,987,913.10x = 2,979,110.91 × 905,781.07
  4. Step 4: Simplify right side
    1,987,913.10x = 2,698,422,269,734.02
  5. Step 5: Solve for x
    x = 2,698,422,269,734.02/1,987,913.10
  6. Step 6: Final answer
    x = 1,357,414.60

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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.