Home / 781,629,819.77-1,078,667,893.20-424,412,651.22

Finding the Fourth Proportional to 781,629,819.77, 1,078,667,893.20 and 424,412,651.22

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Solution

The fourth proportional to 781,629,819.77, 1,078,667,893.20 and 424,412,651.22 is: 585,699,635.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,629,819.77 : 1,078,667,893.20 = 424,412,651.22 : x
  2. Step 2: Convert to fraction form
    781,629,819.77/1,078,667,893.20 = 424,412,651.22/x
  3. Step 3: Cross multiply
    781,629,819.77x = 1,078,667,893.20 × 424,412,651.22
  4. Step 4: Simplify right side
    781,629,819.77x = 457,800,300,338,903,872
  5. Step 5: Solve for x
    x = 457,800,300,338,903,872/781,629,819.77
  6. Step 6: Final answer
    x = 585,699,635.25

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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.