Home / 1,172,229,431.96-1,617,679,777.44-643,627,655.48

Finding the Fourth Proportional to 1,172,229,431.96, 1,617,679,777.44 and 643,627,655.48

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Solution

The fourth proportional to 1,172,229,431.96, 1,617,679,777.44 and 643,627,655.48 is: 888,207,900.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,172,229,431.96 : 1,617,679,777.44 = 643,627,655.48 : x
  2. Step 2: Convert to fraction form
    1,172,229,431.96/1,617,679,777.44 = 643,627,655.48/x
  3. Step 3: Cross multiply
    1,172,229,431.96x = 1,617,679,777.44 × 643,627,655.48
  4. Step 4: Simplify right side
    1,172,229,431.96x = 1,041,183,442,471,115,520
  5. Step 5: Solve for x
    x = 1,041,183,442,471,115,520/1,172,229,431.96
  6. Step 6: Final answer
    x = 888,207,900.33

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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.