Home / 1,086,656.40-1,629,984.60-685,123.20

Finding the Fourth Proportional to 1,086,656.40, 1,629,984.60 and 685,123.20

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Solution

The fourth proportional to 1,086,656.40, 1,629,984.60 and 685,123.20 is: 1,027,684.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,656.40 : 1,629,984.60 = 685,123.20 : x
  2. Step 2: Convert to fraction form
    1,086,656.40/1,629,984.60 = 685,123.20/x
  3. Step 3: Cross multiply
    1,086,656.40x = 1,629,984.60 × 685,123.20
  4. Step 4: Simplify right side
    1,086,656.40x = 1,116,740,265,102.72
  5. Step 5: Solve for x
    x = 1,116,740,265,102.72/1,086,656.40
  6. Step 6: Final answer
    x = 1,027,684.80

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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.