Home / 709,978,065.81-979,807,578.17-396,719,884.05

Finding the Fourth Proportional to 709,978,065.81, 979,807,578.17 and 396,719,884.05

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Solution

The fourth proportional to 709,978,065.81, 979,807,578.17 and 396,719,884.05 is: 547,494,588.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,978,065.81 : 979,807,578.17 = 396,719,884.05 : x
  2. Step 2: Convert to fraction form
    709,978,065.81/979,807,578.17 = 396,719,884.05/x
  3. Step 3: Cross multiply
    709,978,065.81x = 979,807,578.17 × 396,719,884.05
  4. Step 4: Simplify right side
    709,978,065.81x = 388,709,148,800,930,112
  5. Step 5: Solve for x
    x = 388,709,148,800,930,112/709,978,065.81
  6. Step 6: Final answer
    x = 547,494,588.24

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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.