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Finding the Fourth Proportional to 682,391.34, 941,395.55 and 395,745.30

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Solution

The fourth proportional to 682,391.34, 941,395.55 and 395,745.30 is: 545,951.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,391.34 : 941,395.55 = 395,745.30 : x
  2. Step 2: Convert to fraction form
    682,391.34/941,395.55 = 395,745.30/x
  3. Step 3: Cross multiply
    682,391.34x = 941,395.55 × 395,745.30
  4. Step 4: Simplify right side
    682,391.34x = 372,552,862,374.69
  5. Step 5: Solve for x
    x = 372,552,862,374.69/682,391.34
  6. Step 6: Final answer
    x = 545,951.92

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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.