Home / 1,987,907.92-2,979,103.15-905,775.89

Finding the Fourth Proportional to 1,987,907.92, 2,979,103.15 and 905,775.89

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Solution

The fourth proportional to 1,987,907.92, 2,979,103.15 and 905,775.89 is: 1,357,406.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,907.92 : 2,979,103.15 = 905,775.89 : x
  2. Step 2: Convert to fraction form
    1,987,907.92/2,979,103.15 = 905,775.89/x
  3. Step 3: Cross multiply
    1,987,907.92x = 2,979,103.15 × 905,775.89
  4. Step 4: Simplify right side
    1,987,907.92x = 2,698,399,807,093.05
  5. Step 5: Solve for x
    x = 2,698,399,807,093.05/1,987,907.92
  6. Step 6: Final answer
    x = 1,357,406.84

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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.