Home / 1,138,310.88-1,570,807.32-628,980.44

Finding the Fourth Proportional to 1,138,310.88, 1,570,807.32 and 628,980.44

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Solution

The fourth proportional to 1,138,310.88, 1,570,807.32 and 628,980.44 is: 867,958.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,310.88 : 1,570,807.32 = 628,980.44 : x
  2. Step 2: Convert to fraction form
    1,138,310.88/1,570,807.32 = 628,980.44/x
  3. Step 3: Cross multiply
    1,138,310.88x = 1,570,807.32 × 628,980.44
  4. Step 4: Simplify right side
    1,138,310.88x = 988,007,079,288.82
  5. Step 5: Solve for x
    x = 988,007,079,288.82/1,138,310.88
  6. Step 6: Final answer
    x = 867,958.92

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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.