Home / 721,375.50-1,081,360.05-300,771.66

Finding the Fourth Proportional to 721,375.50, 1,081,360.05 and 300,771.66

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Solution

The fourth proportional to 721,375.50, 1,081,360.05 and 300,771.66 is: 450,864.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,375.50 : 1,081,360.05 = 300,771.66 : x
  2. Step 2: Convert to fraction form
    721,375.50/1,081,360.05 = 300,771.66/x
  3. Step 3: Cross multiply
    721,375.50x = 1,081,360.05 × 300,771.66
  4. Step 4: Simplify right side
    721,375.50x = 325,242,457,296.18
  5. Step 5: Solve for x
    x = 325,242,457,296.18/721,375.50
  6. Step 6: Final answer
    x = 450,864.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.