Home / 1,290,115.90-1,935,180.03-391,565.44

Finding the Fourth Proportional to 1,290,115.90, 1,935,180.03 and 391,565.44

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Solution

The fourth proportional to 1,290,115.90, 1,935,180.03 and 391,565.44 is: 587,350.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,115.90 : 1,935,180.03 = 391,565.44 : x
  2. Step 2: Convert to fraction form
    1,290,115.90/1,935,180.03 = 391,565.44/x
  3. Step 3: Cross multiply
    1,290,115.90x = 1,935,180.03 × 391,565.44
  4. Step 4: Simplify right side
    1,290,115.90x = 757,749,619,926.16
  5. Step 5: Solve for x
    x = 757,749,619,926.16/1,290,115.90
  6. Step 6: Final answer
    x = 587,350.04

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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.