Home / 641,378.48-961,783.44-341,803.28

Finding the Fourth Proportional to 641,378.48, 961,783.44 and 341,803.28

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Solution

The fourth proportional to 641,378.48, 961,783.44 and 341,803.28 is: 512,553.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,378.48 : 961,783.44 = 341,803.28 : x
  2. Step 2: Convert to fraction form
    641,378.48/961,783.44 = 341,803.28/x
  3. Step 3: Cross multiply
    641,378.48x = 961,783.44 × 341,803.28
  4. Step 4: Simplify right side
    641,378.48x = 328,740,734,441.68
  5. Step 5: Solve for x
    x = 328,740,734,441.68/641,378.48
  6. Step 6: Final answer
    x = 512,553.42

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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.