Home / 1,200,445,961.96-1,656,579,847.38-664,621,507.68

Finding the Fourth Proportional to 1,200,445,961.96, 1,656,579,847.38 and 664,621,507.68

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Solution

The fourth proportional to 1,200,445,961.96, 1,656,579,847.38 and 664,621,507.68 is: 917,157,981.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200,445,961.96 : 1,656,579,847.38 = 664,621,507.68 : x
  2. Step 2: Convert to fraction form
    1,200,445,961.96/1,656,579,847.38 = 664,621,507.68/x
  3. Step 3: Cross multiply
    1,200,445,961.96x = 1,656,579,847.38 × 664,621,507.68
  4. Step 4: Simplify right side
    1,200,445,961.96x = 1,100,998,595,757,999,872
  5. Step 5: Solve for x
    x = 1,100,998,595,757,999,872/1,200,445,961.96
  6. Step 6: Final answer
    x = 917,157,981.82

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Double scale
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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.