Home / 643,016.40-964,327.59-444,611.76

Finding the Fourth Proportional to 643,016.40, 964,327.59 and 444,611.76

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Solution

The fourth proportional to 643,016.40, 964,327.59 and 444,611.76 is: 666,781.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,016.40 : 964,327.59 = 444,611.76 : x
  2. Step 2: Convert to fraction form
    643,016.40/964,327.59 = 444,611.76/x
  3. Step 3: Cross multiply
    643,016.40x = 964,327.59 × 444,611.76
  4. Step 4: Simplify right side
    643,016.40x = 428,751,387,006.46
  5. Step 5: Solve for x
    x = 428,751,387,006.46/643,016.40
  6. Step 6: Final answer
    x = 666,781.42

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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.