Home / 457,961.40-686,942.10-426,857.40

Finding the Fourth Proportional to 457,961.40, 686,942.10 and 426,857.40

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Solution

The fourth proportional to 457,961.40, 686,942.10 and 426,857.40 is: 640,286.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,961.40 : 686,942.10 = 426,857.40 : x
  2. Step 2: Convert to fraction form
    457,961.40/686,942.10 = 426,857.40/x
  3. Step 3: Cross multiply
    457,961.40x = 686,942.10 × 426,857.40
  4. Step 4: Simplify right side
    457,961.40x = 293,226,318,756.54
  5. Step 5: Solve for x
    x = 293,226,318,756.54/457,961.40
  6. Step 6: Final answer
    x = 640,286.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.