Home / 1,209,722.89-1,814,589.09-490,078.21

Finding the Fourth Proportional to 1,209,722.89, 1,814,589.09 and 490,078.21

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Solution

The fourth proportional to 1,209,722.89, 1,814,589.09 and 490,078.21 is: 735,119.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,722.89 : 1,814,589.09 = 490,078.21 : x
  2. Step 2: Convert to fraction form
    1,209,722.89/1,814,589.09 = 490,078.21/x
  3. Step 3: Cross multiply
    1,209,722.89x = 1,814,589.09 × 490,078.21
  4. Step 4: Simplify right side
    1,209,722.89x = 889,290,573,112.73
  5. Step 5: Solve for x
    x = 889,290,573,112.73/1,209,722.89
  6. Step 6: Final answer
    x = 735,119.24

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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.