Home / 279,124,665.60-418,686,899.85-74,647,426.44

Finding the Fourth Proportional to 279,124,665.60, 418,686,899.85 and 74,647,426.44

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Solution

The fourth proportional to 279,124,665.60, 418,686,899.85 and 74,647,426.44 is: 111,971,113.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,124,665.60 : 418,686,899.85 = 74,647,426.44 : x
  2. Step 2: Convert to fraction form
    279,124,665.60/418,686,899.85 = 74,647,426.44/x
  3. Step 3: Cross multiply
    279,124,665.60x = 418,686,899.85 × 74,647,426.44
  4. Step 4: Simplify right side
    279,124,665.60x = 31,253,899,557,944,524
  5. Step 5: Solve for x
    x = 31,253,899,557,944,524/279,124,665.60
  6. Step 6: Final answer
    x = 111,971,113.30

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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.