Home / 621,143,343.54-857,171,902.77-342,687,116.34

Finding the Fourth Proportional to 621,143,343.54, 857,171,902.77 and 342,687,116.34

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Solution

The fourth proportional to 621,143,343.54, 857,171,902.77 and 342,687,116.34 is: 472,904,959.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,143,343.54 : 857,171,902.77 = 342,687,116.34 : x
  2. Step 2: Convert to fraction form
    621,143,343.54/857,171,902.77 = 342,687,116.34/x
  3. Step 3: Cross multiply
    621,143,343.54x = 857,171,902.77 × 342,687,116.34
  4. Step 4: Simplify right side
    621,143,343.54x = 293,741,767,567,922,112
  5. Step 5: Solve for x
    x = 293,741,767,567,922,112/621,143,343.54
  6. Step 6: Final answer
    x = 472,904,959.25

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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.