Home / 800,781,700.20-1,201,172,550.30-628,789,021.80

Finding the Fourth Proportional to 800,781,700.20, 1,201,172,550.30 and 628,789,021.80

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Solution

The fourth proportional to 800,781,700.20, 1,201,172,550.30 and 628,789,021.80 is: 943,183,532.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,781,700.20 : 1,201,172,550.30 = 628,789,021.80 : x
  2. Step 2: Convert to fraction form
    800,781,700.20/1,201,172,550.30 = 628,789,021.80/x
  3. Step 3: Cross multiply
    800,781,700.20x = 1,201,172,550.30 × 628,789,021.80
  4. Step 4: Simplify right side
    800,781,700.20x = 755,284,112,916,148,224
  5. Step 5: Solve for x
    x = 755,284,112,916,148,224/800,781,700.20
  6. Step 6: Final answer
    x = 943,183,532.70

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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.