Home / 2,790,669.60-4,186,004.40-1,987,603.20

Finding the Fourth Proportional to 2,790,669.60, 4,186,004.40 and 1,987,603.20

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Solution

The fourth proportional to 2,790,669.60, 4,186,004.40 and 1,987,603.20 is: 2,981,404.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790,669.60 : 4,186,004.40 = 1,987,603.20 : x
  2. Step 2: Convert to fraction form
    2,790,669.60/4,186,004.40 = 1,987,603.20/x
  3. Step 3: Cross multiply
    2,790,669.60x = 4,186,004.40 × 1,987,603.20
  4. Step 4: Simplify right side
    2,790,669.60x = 8,320,115,740,654.08
  5. Step 5: Solve for x
    x = 8,320,115,740,654.08/2,790,669.60
  6. Step 6: Final answer
    x = 2,981,404.80

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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.