Home / 1,399,291.16-2,099,086.74-388,417.38

Finding the Fourth Proportional to 1,399,291.16, 2,099,086.74 and 388,417.38

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Solution

The fourth proportional to 1,399,291.16, 2,099,086.74 and 388,417.38 is: 582,667.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,291.16 : 2,099,086.74 = 388,417.38 : x
  2. Step 2: Convert to fraction form
    1,399,291.16/2,099,086.74 = 388,417.38/x
  3. Step 3: Cross multiply
    1,399,291.16x = 2,099,086.74 × 388,417.38
  4. Step 4: Simplify right side
    1,399,291.16x = 815,321,764,071.97
  5. Step 5: Solve for x
    x = 815,321,764,071.97/1,399,291.16
  6. Step 6: Final answer
    x = 582,667.70

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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.