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Finding the Fourth Proportional to 682,809.52, 942,720.99 and 611,066.20

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Solution

The fourth proportional to 682,809.52, 942,720.99 and 611,066.20 is: 843,668.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,809.52 : 942,720.99 = 611,066.20 : x
  2. Step 2: Convert to fraction form
    682,809.52/942,720.99 = 611,066.20/x
  3. Step 3: Cross multiply
    682,809.52x = 942,720.99 × 611,066.20
  4. Step 4: Simplify right side
    682,809.52x = 576,064,933,019.54
  5. Step 5: Solve for x
    x = 576,064,933,019.54/682,809.52
  6. Step 6: Final answer
    x = 843,668.57

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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.