Home / 810,021.28-1,117,817.72-442,493.96

Finding the Fourth Proportional to 810,021.28, 1,117,817.72 and 442,493.96

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Solution

The fourth proportional to 810,021.28, 1,117,817.72 and 442,493.96 is: 610,635.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,021.28 : 1,117,817.72 = 442,493.96 : x
  2. Step 2: Convert to fraction form
    810,021.28/1,117,817.72 = 442,493.96/x
  3. Step 3: Cross multiply
    810,021.28x = 1,117,817.72 × 442,493.96
  4. Step 4: Simplify right side
    810,021.28x = 494,627,589,480.97
  5. Step 5: Solve for x
    x = 494,627,589,480.97/810,021.28
  6. Step 6: Final answer
    x = 610,635.30

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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.