Home / 1,290,369.48-1,935,429.14-391,819.11

Finding the Fourth Proportional to 1,290,369.48, 1,935,429.14 and 391,819.11

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Solution

The fourth proportional to 1,290,369.48, 1,935,429.14 and 391,819.11 is: 587,690.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,369.48 : 1,935,429.14 = 391,819.11 : x
  2. Step 2: Convert to fraction form
    1,290,369.48/1,935,429.14 = 391,819.11/x
  3. Step 3: Cross multiply
    1,290,369.48x = 1,935,429.14 × 391,819.11
  4. Step 4: Simplify right side
    1,290,369.48x = 758,338,123,102.87
  5. Step 5: Solve for x
    x = 758,338,123,102.87/1,290,369.48
  6. Step 6: Final answer
    x = 587,690.68

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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.