Home / 646,645.34-892,440.17-356,286.09

Finding the Fourth Proportional to 646,645.34, 892,440.17 and 356,286.09

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Solution

The fourth proportional to 646,645.34, 892,440.17 and 356,286.09 is: 491,713.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,645.34 : 892,440.17 = 356,286.09 : x
  2. Step 2: Convert to fraction form
    646,645.34/892,440.17 = 356,286.09/x
  3. Step 3: Cross multiply
    646,645.34x = 892,440.17 × 356,286.09
  4. Step 4: Simplify right side
    646,645.34x = 317,964,016,946.81
  5. Step 5: Solve for x
    x = 317,964,016,946.81/646,645.34
  6. Step 6: Final answer
    x = 491,713.15

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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.