Home / 643,015.39-964,326.10-444,610.75

Finding the Fourth Proportional to 643,015.39, 964,326.10 and 444,610.75

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Solution

The fourth proportional to 643,015.39, 964,326.10 and 444,610.75 is: 666,779.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,015.39 : 964,326.10 = 444,610.75 : x
  2. Step 2: Convert to fraction form
    643,015.39/964,326.10 = 444,610.75/x
  3. Step 3: Cross multiply
    643,015.39x = 964,326.10 × 444,610.75
  4. Step 4: Simplify right side
    643,015.39x = 428,749,750,565.58
  5. Step 5: Solve for x
    x = 428,749,750,565.58/643,015.39
  6. Step 6: Final answer
    x = 666,779.92

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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.