Home / 814,138.80-1,220,862.60-393,543.60

Finding the Fourth Proportional to 814,138.80, 1,220,862.60 and 393,543.60

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Solution

The fourth proportional to 814,138.80, 1,220,862.60 and 393,543.60 is: 590,148.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,138.80 : 1,220,862.60 = 393,543.60 : x
  2. Step 2: Convert to fraction form
    814,138.80/1,220,862.60 = 393,543.60/x
  3. Step 3: Cross multiply
    814,138.80x = 1,220,862.60 × 393,543.60
  4. Step 4: Simplify right side
    814,138.80x = 480,462,662,709.36
  5. Step 5: Solve for x
    x = 480,462,662,709.36/814,138.80
  6. Step 6: Final answer
    x = 590,148.34

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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.