Home / 812,744.23-1,120,813.09-486,004.03

Finding the Fourth Proportional to 812,744.23, 1,120,813.09 and 486,004.03

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Solution

The fourth proportional to 812,744.23, 1,120,813.09 and 486,004.03 is: 670,222.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,744.23 : 1,120,813.09 = 486,004.03 : x
  2. Step 2: Convert to fraction form
    812,744.23/1,120,813.09 = 486,004.03/x
  3. Step 3: Cross multiply
    812,744.23x = 1,120,813.09 × 486,004.03
  4. Step 4: Simplify right side
    812,744.23x = 544,719,678,616.75
  5. Step 5: Solve for x
    x = 544,719,678,616.75/812,744.23
  6. Step 6: Final answer
    x = 670,222.76

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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.