Home / 1,290,390.41-1,935,460.46-391,839.92

Finding the Fourth Proportional to 1,290,390.41, 1,935,460.46 and 391,839.92

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Solution

The fourth proportional to 1,290,390.41, 1,935,460.46 and 391,839.92 is: 587,721.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,390.41 : 1,935,460.46 = 391,839.92 : x
  2. Step 2: Convert to fraction form
    1,290,390.41/1,935,460.46 = 391,839.92/x
  3. Step 3: Cross multiply
    1,290,390.41x = 1,935,460.46 × 391,839.92
  4. Step 4: Simplify right side
    1,290,390.41x = 758,390,669,850.36
  5. Step 5: Solve for x
    x = 758,390,669,850.36/1,290,390.41
  6. Step 6: Final answer
    x = 587,721.87

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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.