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Finding the Fourth Proportional to 640,245.18, 960,472.01 and 299,029.82

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Solution

The fourth proportional to 640,245.18, 960,472.01 and 299,029.82 is: 448,593.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,245.18 : 960,472.01 = 299,029.82 : x
  2. Step 2: Convert to fraction form
    640,245.18/960,472.01 = 299,029.82/x
  3. Step 3: Cross multiply
    640,245.18x = 960,472.01 × 299,029.82
  4. Step 4: Simplify right side
    640,245.18x = 287,209,774,292.73
  5. Step 5: Solve for x
    x = 287,209,774,292.73/640,245.18
  6. Step 6: Final answer
    x = 448,593.42

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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.