Home / 643,564.40-964,063.56-502,663.28

Finding the Fourth Proportional to 643,564.40, 964,063.56 and 502,663.28

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Solution

The fourth proportional to 643,564.40, 964,063.56 and 502,663.28 is: 752,992.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,564.40 : 964,063.56 = 502,663.28 : x
  2. Step 2: Convert to fraction form
    643,564.40/964,063.56 = 502,663.28/x
  3. Step 3: Cross multiply
    643,564.40x = 964,063.56 × 502,663.28
  4. Step 4: Simplify right side
    643,564.40x = 484,599,351,198.08
  5. Step 5: Solve for x
    x = 484,599,351,198.08/643,564.40
  6. Step 6: Final answer
    x = 752,992.79

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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.