Home / 718,196,377.88-991,110,553.81-388,171,516.88

Finding the Fourth Proportional to 718,196,377.88, 991,110,553.81 and 388,171,516.88

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Solution

The fourth proportional to 718,196,377.88, 991,110,553.81 and 388,171,516.88 is: 535,676,451.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,196,377.88 : 991,110,553.81 = 388,171,516.88 : x
  2. Step 2: Convert to fraction form
    718,196,377.88/991,110,553.81 = 388,171,516.88/x
  3. Step 3: Cross multiply
    718,196,377.88x = 991,110,553.81 × 388,171,516.88
  4. Step 4: Simplify right side
    718,196,377.88x = 384,720,887,071,897,344
  5. Step 5: Solve for x
    x = 384,720,887,071,897,344/718,196,377.88
  6. Step 6: Final answer
    x = 535,676,451.34

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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.