Home / 800,781,707.70-1,201,172,561.55-628,789,029.30

Finding the Fourth Proportional to 800,781,707.70, 1,201,172,561.55 and 628,789,029.30

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Solution

The fourth proportional to 800,781,707.70, 1,201,172,561.55 and 628,789,029.30 is: 943,183,543.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,781,707.70 : 1,201,172,561.55 = 628,789,029.30 : x
  2. Step 2: Convert to fraction form
    800,781,707.70/1,201,172,561.55 = 628,789,029.30/x
  3. Step 3: Cross multiply
    800,781,707.70x = 1,201,172,561.55 × 628,789,029.30
  4. Step 4: Simplify right side
    800,781,707.70x = 755,284,128,998,818,944
  5. Step 5: Solve for x
    x = 755,284,128,998,818,944/800,781,707.70
  6. Step 6: Final answer
    x = 943,183,543.95

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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.