Home / 990,874.35-1,367,360.91-561,157.61

Finding the Fourth Proportional to 990,874.35, 1,367,360.91 and 561,157.61

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Solution

The fourth proportional to 990,874.35, 1,367,360.91 and 561,157.61 is: 774,371.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,874.35 : 1,367,360.91 = 561,157.61 : x
  2. Step 2: Convert to fraction form
    990,874.35/1,367,360.91 = 561,157.61/x
  3. Step 3: Cross multiply
    990,874.35x = 1,367,360.91 × 561,157.61
  4. Step 4: Simplify right side
    990,874.35x = 767,304,973,426.22
  5. Step 5: Solve for x
    x = 767,304,973,426.22/990,874.35
  6. Step 6: Final answer
    x = 774,371.62

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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.