Home / 709,978,066.06-979,807,578.51-396,719,884.30

Finding the Fourth Proportional to 709,978,066.06, 979,807,578.51 and 396,719,884.30

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Solution

The fourth proportional to 709,978,066.06, 979,807,578.51 and 396,719,884.30 is: 547,494,588.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,978,066.06 : 979,807,578.51 = 396,719,884.30 : x
  2. Step 2: Convert to fraction form
    709,978,066.06/979,807,578.51 = 396,719,884.30/x
  3. Step 3: Cross multiply
    709,978,066.06x = 979,807,578.51 × 396,719,884.30
  4. Step 4: Simplify right side
    709,978,066.06x = 388,709,149,182,750,400
  5. Step 5: Solve for x
    x = 388,709,149,182,750,400/709,978,066.06
  6. Step 6: Final answer
    x = 547,494,588.59

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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.