Home / 718,196,375.35-991,110,550.32-388,171,514.35

Finding the Fourth Proportional to 718,196,375.35, 991,110,550.32 and 388,171,514.35

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Solution

The fourth proportional to 718,196,375.35, 991,110,550.32 and 388,171,514.35 is: 535,676,447.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,196,375.35 : 991,110,550.32 = 388,171,514.35 : x
  2. Step 2: Convert to fraction form
    718,196,375.35/991,110,550.32 = 388,171,514.35/x
  3. Step 3: Cross multiply
    718,196,375.35x = 991,110,550.32 × 388,171,514.35
  4. Step 4: Simplify right side
    718,196,375.35x = 384,720,883,207,215,168
  5. Step 5: Solve for x
    x = 384,720,883,207,215,168/718,196,375.35
  6. Step 6: Final answer
    x = 535,676,447.85

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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.