Home / 621,295,055.12-857,405,397.64-339,055,719.32

Finding the Fourth Proportional to 621,295,055.12, 857,405,397.64 and 339,055,719.32

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Solution

The fourth proportional to 621,295,055.12, 857,405,397.64 and 339,055,719.32 is: 467,906,836.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,295,055.12 : 857,405,397.64 = 339,055,719.32 : x
  2. Step 2: Convert to fraction form
    621,295,055.12/857,405,397.64 = 339,055,719.32/x
  3. Step 3: Cross multiply
    621,295,055.12x = 857,405,397.64 × 339,055,719.32
  4. Step 4: Simplify right side
    621,295,055.12x = 290,708,203,845,680,832
  5. Step 5: Solve for x
    x = 290,708,203,845,680,832/621,295,055.12
  6. Step 6: Final answer
    x = 467,906,836.61

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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.