Home / 685,252.31-945,636.68-379,322.15

Finding the Fourth Proportional to 685,252.31, 945,636.68 and 379,322.15

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Solution

The fourth proportional to 685,252.31, 945,636.68 and 379,322.15 is: 523,458.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,252.31 : 945,636.68 = 379,322.15 : x
  2. Step 2: Convert to fraction form
    685,252.31/945,636.68 = 379,322.15/x
  3. Step 3: Cross multiply
    685,252.31x = 945,636.68 × 379,322.15
  4. Step 4: Simplify right side
    685,252.31x = 358,700,934,796.58
  5. Step 5: Solve for x
    x = 358,700,934,796.58/685,252.31
  6. Step 6: Final answer
    x = 523,458.20

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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.