Home / 825,622,411.86-1,139,344,192.89-449,266,163.49

Finding the Fourth Proportional to 825,622,411.86, 1,139,344,192.89 and 449,266,163.49

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Solution

The fourth proportional to 825,622,411.86, 1,139,344,192.89 and 449,266,163.49 is: 619,979,287.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,622,411.86 : 1,139,344,192.89 = 449,266,163.49 : x
  2. Step 2: Convert to fraction form
    825,622,411.86/1,139,344,192.89 = 449,266,163.49/x
  3. Step 3: Cross multiply
    825,622,411.86x = 1,139,344,192.89 × 449,266,163.49
  4. Step 4: Simplify right side
    825,622,411.86x = 511,868,794,434,300,864
  5. Step 5: Solve for x
    x = 511,868,794,434,300,864/825,622,411.86
  6. Step 6: Final answer
    x = 619,979,287.24

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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.