Home / 1,290,371.85-1,935,432.70-391,821.48

Finding the Fourth Proportional to 1,290,371.85, 1,935,432.70 and 391,821.48

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Solution

The fourth proportional to 1,290,371.85, 1,935,432.70 and 391,821.48 is: 587,694.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,371.85 : 1,935,432.70 = 391,821.48 : x
  2. Step 2: Convert to fraction form
    1,290,371.85/1,935,432.70 = 391,821.48/x
  3. Step 3: Cross multiply
    1,290,371.85x = 1,935,432.70 × 391,821.48
  4. Step 4: Simplify right side
    1,290,371.85x = 758,344,104,954.40
  5. Step 5: Solve for x
    x = 758,344,104,954.40/1,290,371.85
  6. Step 6: Final answer
    x = 587,694.24

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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.