Home / 1,138,109.88-1,570,654.62-628,801.32

Finding the Fourth Proportional to 1,138,109.88, 1,570,654.62 and 628,801.32

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Solution

The fourth proportional to 1,138,109.88, 1,570,654.62 and 628,801.32 is: 867,780.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,109.88 : 1,570,654.62 = 628,801.32 : x
  2. Step 2: Convert to fraction form
    1,138,109.88/1,570,654.62 = 628,801.32/x
  3. Step 3: Cross multiply
    1,138,109.88x = 1,570,654.62 × 628,801.32
  4. Step 4: Simplify right side
    1,138,109.88x = 987,629,698,320.10
  5. Step 5: Solve for x
    x = 987,629,698,320.10/1,138,109.88
  6. Step 6: Final answer
    x = 867,780.62

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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.