Home / 811,236.27-1,119,460.78-443,640.87

Finding the Fourth Proportional to 811,236.27, 1,119,460.78 and 443,640.87

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Solution

The fourth proportional to 811,236.27, 1,119,460.78 and 443,640.87 is: 612,199.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,236.27 : 1,119,460.78 = 443,640.87 : x
  2. Step 2: Convert to fraction form
    811,236.27/1,119,460.78 = 443,640.87/x
  3. Step 3: Cross multiply
    811,236.27x = 1,119,460.78 × 443,640.87
  4. Step 4: Simplify right side
    811,236.27x = 496,638,554,370.08
  5. Step 5: Solve for x
    x = 496,638,554,370.08/811,236.27
  6. Step 6: Final answer
    x = 612,199.64

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1.5x scale

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.