Home / 672,818.09-1,009,245.68-217,428.80

Finding the Fourth Proportional to 672,818.09, 1,009,245.68 and 217,428.80

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Solution

The fourth proportional to 672,818.09, 1,009,245.68 and 217,428.80 is: 326,149.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,818.09 : 1,009,245.68 = 217,428.80 : x
  2. Step 2: Convert to fraction form
    672,818.09/1,009,245.68 = 217,428.80/x
  3. Step 3: Cross multiply
    672,818.09x = 1,009,245.68 × 217,428.80
  4. Step 4: Simplify right side
    672,818.09x = 219,439,072,604.93
  5. Step 5: Solve for x
    x = 219,439,072,604.93/672,818.09
  6. Step 6: Final answer
    x = 326,149.19

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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.