Home / 654,221.49-981,083.16-429,521.82

Finding the Fourth Proportional to 654,221.49, 981,083.16 and 429,521.82

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Solution

The fourth proportional to 654,221.49, 981,083.16 and 429,521.82 is: 644,119.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,221.49 : 981,083.16 = 429,521.82 : x
  2. Step 2: Convert to fraction form
    654,221.49/981,083.16 = 429,521.82/x
  3. Step 3: Cross multiply
    654,221.49x = 981,083.16 × 429,521.82
  4. Step 4: Simplify right side
    654,221.49x = 421,396,624,454.55
  5. Step 5: Solve for x
    x = 421,396,624,454.55/654,221.49
  6. Step 6: Final answer
    x = 644,119.20

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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.