Home / 990,861.85-1,367,343.65-561,145.11

Finding the Fourth Proportional to 990,861.85, 1,367,343.65 and 561,145.11

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Solution

The fourth proportional to 990,861.85, 1,367,343.65 and 561,145.11 is: 774,354.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,861.85 : 1,367,343.65 = 561,145.11 : x
  2. Step 2: Convert to fraction form
    990,861.85/1,367,343.65 = 561,145.11/x
  3. Step 3: Cross multiply
    990,861.85x = 1,367,343.65 × 561,145.11
  4. Step 4: Simplify right side
    990,861.85x = 767,278,202,887.05
  5. Step 5: Solve for x
    x = 767,278,202,887.05/990,861.85
  6. Step 6: Final answer
    x = 774,354.37

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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.