Home / 1,285,488,778.78-1,773,993,951.93-721,098,769.42

Finding the Fourth Proportional to 1,285,488,778.78, 1,773,993,951.93 and 721,098,769.42

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Solution

The fourth proportional to 1,285,488,778.78, 1,773,993,951.93 and 721,098,769.42 is: 995,127,205.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,488,778.78 : 1,773,993,951.93 = 721,098,769.42 : x
  2. Step 2: Convert to fraction form
    1,285,488,778.78/1,773,993,951.93 = 721,098,769.42/x
  3. Step 3: Cross multiply
    1,285,488,778.78x = 1,773,993,951.93 × 721,098,769.42
  4. Step 4: Simplify right side
    1,285,488,778.78x = 1,279,224,855,695,245,568
  5. Step 5: Solve for x
    x = 1,279,224,855,695,245,568/1,285,488,778.78
  6. Step 6: Final answer
    x = 995,127,205.16

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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.