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Finding the Fourth Proportional to 990,754.38, 1,367,253 and 561,023.46

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Solution

The fourth proportional to 990,754.38, 1,367,253 and 561,023.46 is: 774,219.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,754.38 : 1,367,253 = 561,023.46 : x
  2. Step 2: Convert to fraction form
    990,754.38/1,367,253 = 561,023.46/x
  3. Step 3: Cross multiply
    990,754.38x = 1,367,253 × 561,023.46
  4. Step 4: Simplify right side
    990,754.38x = 767,061,008,755.38
  5. Step 5: Solve for x
    x = 767,061,008,755.38/990,754.38
  6. Step 6: Final answer
    x = 774,219.14

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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.