Home / 1,109,231.20-1,664,030.74-389,386.22

Finding the Fourth Proportional to 1,109,231.20, 1,664,030.74 and 389,386.22

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Solution

The fourth proportional to 1,109,231.20, 1,664,030.74 and 389,386.22 is: 584,143.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,109,231.20 : 1,664,030.74 = 389,386.22 : x
  2. Step 2: Convert to fraction form
    1,109,231.20/1,664,030.74 = 389,386.22/x
  3. Step 3: Cross multiply
    1,109,231.20x = 1,664,030.74 × 389,386.22
  4. Step 4: Simplify right side
    1,109,231.20x = 647,950,640,609.06
  5. Step 5: Solve for x
    x = 647,950,640,609.06/1,109,231.20
  6. Step 6: Final answer
    x = 584,143.90

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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.