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Finding the Fourth Proportional to 699,339,777, 965,063,591.89 and 386,067,264.31

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Solution

The fourth proportional to 699,339,777, 965,063,591.89 and 386,067,264.31 is: 532,758,857.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,339,777 : 965,063,591.89 = 386,067,264.31 : x
  2. Step 2: Convert to fraction form
    699,339,777/965,063,591.89 = 386,067,264.31/x
  3. Step 3: Cross multiply
    699,339,777x = 965,063,591.89 × 386,067,264.31
  4. Step 4: Simplify right side
    699,339,777x = 372,579,460,806,154,624
  5. Step 5: Solve for x
    x = 372,579,460,806,154,624/699,339,777
  6. Step 6: Final answer
    x = 532,758,857.80

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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.