Home / 642,052,420.44-886,086,983.71-363,643,471.32

Finding the Fourth Proportional to 642,052,420.44, 886,086,983.71 and 363,643,471.32

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Solution

The fourth proportional to 642,052,420.44, 886,086,983.71 and 363,643,471.32 is: 501,858,939.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,052,420.44 : 886,086,983.71 = 363,643,471.32 : x
  2. Step 2: Convert to fraction form
    642,052,420.44/886,086,983.71 = 363,643,471.32/x
  3. Step 3: Cross multiply
    642,052,420.44x = 886,086,983.71 × 363,643,471.32
  4. Step 4: Simplify right side
    642,052,420.44x = 322,219,746,647,772,672
  5. Step 5: Solve for x
    x = 322,219,746,647,772,672/642,052,420.44
  6. Step 6: Final answer
    x = 501,858,939.22

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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.