Home / 643,013.28-964,189.44-377,297.64

Finding the Fourth Proportional to 643,013.28, 964,189.44 and 377,297.64

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Solution

The fourth proportional to 643,013.28, 964,189.44 and 377,297.64 is: 565,752.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,013.28 : 964,189.44 = 377,297.64 : x
  2. Step 2: Convert to fraction form
    643,013.28/964,189.44 = 377,297.64/x
  3. Step 3: Cross multiply
    643,013.28x = 964,189.44 × 377,297.64
  4. Step 4: Simplify right side
    643,013.28x = 363,786,400,224.92
  5. Step 5: Solve for x
    x = 363,786,400,224.92/643,013.28
  6. Step 6: Final answer
    x = 565,752.55

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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.