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Finding the Fourth Proportional to 682,489, 941,718.18 and 395,943.40

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Solution

The fourth proportional to 682,489, 941,718.18 and 395,943.40 is: 546,334.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,489 : 941,718.18 = 395,943.40 : x
  2. Step 2: Convert to fraction form
    682,489/941,718.18 = 395,943.40/x
  3. Step 3: Cross multiply
    682,489x = 941,718.18 × 395,943.40
  4. Step 4: Simplify right side
    682,489x = 372,867,098,031.01
  5. Step 5: Solve for x
    x = 372,867,098,031.01/682,489
  6. Step 6: Final answer
    x = 546,334.22

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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.