Home / 1,285,488,777.78-1,773,993,950.55-721,098,768.42

Finding the Fourth Proportional to 1,285,488,777.78, 1,773,993,950.55 and 721,098,768.42

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Solution

The fourth proportional to 1,285,488,777.78, 1,773,993,950.55 and 721,098,768.42 is: 995,127,203.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,488,777.78 : 1,773,993,950.55 = 721,098,768.42 : x
  2. Step 2: Convert to fraction form
    1,285,488,777.78/1,773,993,950.55 = 721,098,768.42/x
  3. Step 3: Cross multiply
    1,285,488,777.78x = 1,773,993,950.55 × 721,098,768.42
  4. Step 4: Simplify right side
    1,285,488,777.78x = 1,279,224,852,926,135,296
  5. Step 5: Solve for x
    x = 1,279,224,852,926,135,296/1,285,488,777.78
  6. Step 6: Final answer
    x = 995,127,203.78

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1.5x scale

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.