Home / 990,807.22-1,367,398.29-561,163.78

Finding the Fourth Proportional to 990,807.22, 1,367,398.29 and 561,163.78

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Solution

The fourth proportional to 990,807.22, 1,367,398.29 and 561,163.78 is: 774,453.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,807.22 : 1,367,398.29 = 561,163.78 : x
  2. Step 2: Convert to fraction form
    990,807.22/1,367,398.29 = 561,163.78/x
  3. Step 3: Cross multiply
    990,807.22x = 1,367,398.29 × 561,163.78
  4. Step 4: Simplify right side
    990,807.22x = 767,334,393,181.94
  5. Step 5: Solve for x
    x = 767,334,393,181.94/990,807.22
  6. Step 6: Final answer
    x = 774,453.78

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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.