Home / 679,591.45-937,731.22-393,138.19

Finding the Fourth Proportional to 679,591.45, 937,731.22 and 393,138.19

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Solution

The fourth proportional to 679,591.45, 937,731.22 and 393,138.19 is: 542,469.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,591.45 : 937,731.22 = 393,138.19 : x
  2. Step 2: Convert to fraction form
    679,591.45/937,731.22 = 393,138.19/x
  3. Step 3: Cross multiply
    679,591.45x = 937,731.22 × 393,138.19
  4. Step 4: Simplify right side
    679,591.45x = 368,657,954,537.29
  5. Step 5: Solve for x
    x = 368,657,954,537.29/679,591.45
  6. Step 6: Final answer
    x = 542,469.97

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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.