Home / 1,245,640.40-1,868,921.40-404,219.60

Finding the Fourth Proportional to 1,245,640.40, 1,868,921.40 and 404,219.60

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Solution

The fourth proportional to 1,245,640.40, 1,868,921.40 and 404,219.60 is: 606,478.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,640.40 : 1,868,921.40 = 404,219.60 : x
  2. Step 2: Convert to fraction form
    1,245,640.40/1,868,921.40 = 404,219.60/x
  3. Step 3: Cross multiply
    1,245,640.40x = 1,868,921.40 × 404,219.60
  4. Step 4: Simplify right side
    1,245,640.40x = 755,454,660,739.44
  5. Step 5: Solve for x
    x = 755,454,660,739.44/1,245,640.40
  6. Step 6: Final answer
    x = 606,478.93

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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.