Home / 765,674.51-1,149,220.66-386,861.85

Finding the Fourth Proportional to 765,674.51, 1,149,220.66 and 386,861.85

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Solution

The fourth proportional to 765,674.51, 1,149,220.66 and 386,861.85 is: 580,650.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,674.51 : 1,149,220.66 = 386,861.85 : x
  2. Step 2: Convert to fraction form
    765,674.51/1,149,220.66 = 386,861.85/x
  3. Step 3: Cross multiply
    765,674.51x = 1,149,220.66 × 386,861.85
  4. Step 4: Simplify right side
    765,674.51x = 444,589,627,111.85
  5. Step 5: Solve for x
    x = 444,589,627,111.85/765,674.51
  6. Step 6: Final answer
    x = 580,650.94

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1.5x scale

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.