Home / 721,823,629.38-996,090,833.22-408,551,115.48

Finding the Fourth Proportional to 721,823,629.38, 996,090,833.22 and 408,551,115.48

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Solution

The fourth proportional to 721,823,629.38, 996,090,833.22 and 408,551,115.48 is: 563,785,950.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,823,629.38 : 996,090,833.22 = 408,551,115.48 : x
  2. Step 2: Convert to fraction form
    721,823,629.38/996,090,833.22 = 408,551,115.48/x
  3. Step 3: Cross multiply
    721,823,629.38x = 996,090,833.22 × 408,551,115.48
  4. Step 4: Simplify right side
    721,823,629.38x = 406,954,021,031,433,664
  5. Step 5: Solve for x
    x = 406,954,021,031,433,664/721,823,629.38
  6. Step 6: Final answer
    x = 563,785,950.57

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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.