Home / 667,689,329.80-1,001,067,434.70-394,919,691.40

Finding the Fourth Proportional to 667,689,329.80, 1,001,067,434.70 and 394,919,691.40

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Solution

The fourth proportional to 667,689,329.80, 1,001,067,434.70 and 394,919,691.40 is: 592,103,579.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,689,329.80 : 1,001,067,434.70 = 394,919,691.40 : x
  2. Step 2: Convert to fraction form
    667,689,329.80/1,001,067,434.70 = 394,919,691.40/x
  3. Step 3: Cross multiply
    667,689,329.80x = 1,001,067,434.70 × 394,919,691.40
  4. Step 4: Simplify right side
    667,689,329.80x = 395,341,242,382,313,664
  5. Step 5: Solve for x
    x = 395,341,242,382,313,664/667,689,329.80
  6. Step 6: Final answer
    x = 592,103,579.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.