Home / 391,697,350.12-541,317,903.05-321,021,486.39

Finding the Fourth Proportional to 391,697,350.12, 541,317,903.05 and 321,021,486.39

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Solution

The fourth proportional to 391,697,350.12, 541,317,903.05 and 321,021,486.39 is: 443,645,273.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,697,350.12 : 541,317,903.05 = 321,021,486.39 : x
  2. Step 2: Convert to fraction form
    391,697,350.12/541,317,903.05 = 321,021,486.39/x
  3. Step 3: Cross multiply
    391,697,350.12x = 541,317,903.05 × 321,021,486.39
  4. Step 4: Simplify right side
    391,697,350.12x = 173,774,677,846,628,896
  5. Step 5: Solve for x
    x = 173,774,677,846,628,896/391,697,350.12
  6. Step 6: Final answer
    x = 443,645,273.05

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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.