Home / 1,138,120.56-1,570,638.24-628,855.92

Finding the Fourth Proportional to 1,138,120.56, 1,570,638.24 and 628,855.92

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Solution

The fourth proportional to 1,138,120.56, 1,570,638.24 and 628,855.92 is: 867,838.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,120.56 : 1,570,638.24 = 628,855.92 : x
  2. Step 2: Convert to fraction form
    1,138,120.56/1,570,638.24 = 628,855.92/x
  3. Step 3: Cross multiply
    1,138,120.56x = 1,570,638.24 × 628,855.92
  4. Step 4: Simplify right side
    1,138,120.56x = 987,705,155,402.38
  5. Step 5: Solve for x
    x = 987,705,155,402.38/1,138,120.56
  6. Step 6: Final answer
    x = 867,838.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.