Home / 643,005.40-964,311.09-444,600.76

Finding the Fourth Proportional to 643,005.40, 964,311.09 and 444,600.76

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Solution

The fourth proportional to 643,005.40, 964,311.09 and 444,600.76 is: 666,764.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,005.40 : 964,311.09 = 444,600.76 : x
  2. Step 2: Convert to fraction form
    643,005.40/964,311.09 = 444,600.76/x
  3. Step 3: Cross multiply
    643,005.40x = 964,311.09 × 444,600.76
  4. Step 4: Simplify right side
    643,005.40x = 428,733,443,490.43
  5. Step 5: Solve for x
    x = 428,733,443,490.43/643,005.40
  6. Step 6: Final answer
    x = 666,764.92

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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.