Home / 1,290,392.91-1,935,464.21-391,842.42

Finding the Fourth Proportional to 1,290,392.91, 1,935,464.21 and 391,842.42

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Solution

The fourth proportional to 1,290,392.91, 1,935,464.21 and 391,842.42 is: 587,725.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,392.91 : 1,935,464.21 = 391,842.42 : x
  2. Step 2: Convert to fraction form
    1,290,392.91/1,935,464.21 = 391,842.42/x
  3. Step 3: Cross multiply
    1,290,392.91x = 1,935,464.21 × 391,842.42
  4. Step 4: Simplify right side
    1,290,392.91x = 758,396,977,910.58
  5. Step 5: Solve for x
    x = 758,396,977,910.58/1,290,392.91
  6. Step 6: Final answer
    x = 587,725.62

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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.