Home / 643,036.43-964,357.58-444,631.79

Finding the Fourth Proportional to 643,036.43, 964,357.58 and 444,631.79

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Solution

The fourth proportional to 643,036.43, 964,357.58 and 444,631.79 is: 666,811.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,036.43 : 964,357.58 = 444,631.79 : x
  2. Step 2: Convert to fraction form
    643,036.43/964,357.58 = 444,631.79/x
  3. Step 3: Cross multiply
    643,036.43x = 964,357.58 × 444,631.79
  4. Step 4: Simplify right side
    643,036.43x = 428,784,034,772.31
  5. Step 5: Solve for x
    x = 428,784,034,772.31/643,036.43
  6. Step 6: Final answer
    x = 666,811.42

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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.