Home / 1,138,031.28-1,570,499.64-628,745.40

Finding the Fourth Proportional to 1,138,031.28, 1,570,499.64 and 628,745.40

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Solution

The fourth proportional to 1,138,031.28, 1,570,499.64 and 628,745.40 is: 867,677.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,031.28 : 1,570,499.64 = 628,745.40 : x
  2. Step 2: Convert to fraction form
    1,138,031.28/1,570,499.64 = 628,745.40/x
  3. Step 3: Cross multiply
    1,138,031.28x = 1,570,499.64 × 628,745.40
  4. Step 4: Simplify right side
    1,138,031.28x = 987,444,424,351.66
  5. Step 5: Solve for x
    x = 987,444,424,351.66/1,138,031.28
  6. Step 6: Final answer
    x = 867,677.75

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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.