Home / 1,279,856,525,615-1,918,440,917,615.20-430,618,222,560.48

Finding the Fourth Proportional to 1,279,856,525,615, 1,918,440,917,615.20 and 430,618,222,560.48

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Solution

The fourth proportional to 1,279,856,525,615, 1,918,440,917,615.20 and 430,618,222,560.48 is: 645,475,177,488.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,856,525,615 : 1,918,440,917,615.20 = 430,618,222,560.48 : x
  2. Step 2: Convert to fraction form
    1,279,856,525,615/1,918,440,917,615.20 = 430,618,222,560.48/x
  3. Step 3: Cross multiply
    1,279,856,525,615x = 1,918,440,917,615.20 × 430,618,222,560.48
  4. Step 4: Simplify right side
    1,279,856,525,615x = 826,115,618,030,753,553,580,032
  5. Step 5: Solve for x
    x = 826,115,618,030,753,553,580,032/1,279,856,525,615
  6. Step 6: Final answer
    x = 645,475,177,488.19

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Double scale
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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.