Home / 1,290,369.85-1,935,429.70-391,819.48

Finding the Fourth Proportional to 1,290,369.85, 1,935,429.70 and 391,819.48

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Solution

The fourth proportional to 1,290,369.85, 1,935,429.70 and 391,819.48 is: 587,691.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,369.85 : 1,935,429.70 = 391,819.48 : x
  2. Step 2: Convert to fraction form
    1,290,369.85/1,935,429.70 = 391,819.48/x
  3. Step 3: Cross multiply
    1,290,369.85x = 1,935,429.70 × 391,819.48
  4. Step 4: Simplify right side
    1,290,369.85x = 758,339,058,630.56
  5. Step 5: Solve for x
    x = 758,339,058,630.56/1,290,369.85
  6. Step 6: Final answer
    x = 587,691.24

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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.