Home / 787,899.69-1,182,218.63-388,322.64

Finding the Fourth Proportional to 787,899.69, 1,182,218.63 and 388,322.64

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Solution

The fourth proportional to 787,899.69, 1,182,218.63 and 388,322.64 is: 582,665.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,899.69 : 1,182,218.63 = 388,322.64 : x
  2. Step 2: Convert to fraction form
    787,899.69/1,182,218.63 = 388,322.64/x
  3. Step 3: Cross multiply
    787,899.69x = 1,182,218.63 × 388,322.64
  4. Step 4: Simplify right side
    787,899.69x = 459,082,257,517.17
  5. Step 5: Solve for x
    x = 459,082,257,517.17/787,899.69
  6. Step 6: Final answer
    x = 582,665.87

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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.