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Finding the Fourth Proportional to 485,329.97, 669,558.08 and 322,063.47

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Solution

The fourth proportional to 485,329.97, 669,558.08 and 322,063.47 is: 444,316.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,329.97 : 669,558.08 = 322,063.47 : x
  2. Step 2: Convert to fraction form
    485,329.97/669,558.08 = 322,063.47/x
  3. Step 3: Cross multiply
    485,329.97x = 669,558.08 × 322,063.47
  4. Step 4: Simplify right side
    485,329.97x = 215,640,199,416.50
  5. Step 5: Solve for x
    x = 215,640,199,416.50/485,329.97
  6. Step 6: Final answer
    x = 444,316.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.