Home / 1,290,451.70-1,935,680.69-391,900.28

Finding the Fourth Proportional to 1,290,451.70, 1,935,680.69 and 391,900.28

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Solution

The fourth proportional to 1,290,451.70, 1,935,680.69 and 391,900.28 is: 587,851.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,451.70 : 1,935,680.69 = 391,900.28 : x
  2. Step 2: Convert to fraction form
    1,290,451.70/1,935,680.69 = 391,900.28/x
  3. Step 3: Cross multiply
    1,290,451.70x = 1,935,680.69 × 391,900.28
  4. Step 4: Simplify right side
    1,290,451.70x = 758,593,795,702.94
  5. Step 5: Solve for x
    x = 758,593,795,702.94/1,290,451.70
  6. Step 6: Final answer
    x = 587,851.37

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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.