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Finding the Fourth Proportional to 990,686.08, 1,367,152 and 561,049.84

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Solution

The fourth proportional to 990,686.08, 1,367,152 and 561,049.84 is: 774,251.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,686.08 : 1,367,152 = 561,049.84 : x
  2. Step 2: Convert to fraction form
    990,686.08/1,367,152 = 561,049.84/x
  3. Step 3: Cross multiply
    990,686.08x = 1,367,152 × 561,049.84
  4. Step 4: Simplify right side
    990,686.08x = 767,040,410,855.68
  5. Step 5: Solve for x
    x = 767,040,410,855.68/990,686.08
  6. Step 6: Final answer
    x = 774,251.73

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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.