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Finding the Fourth Proportional to 640,260.72, 960,495.39 and 299,045.43

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Solution

The fourth proportional to 640,260.72, 960,495.39 and 299,045.43 is: 448,616.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,260.72 : 960,495.39 = 299,045.43 : x
  2. Step 2: Convert to fraction form
    640,260.72/960,495.39 = 299,045.43/x
  3. Step 3: Cross multiply
    640,260.72x = 960,495.39 × 299,045.43
  4. Step 4: Simplify right side
    640,260.72x = 287,231,756,915.57
  5. Step 5: Solve for x
    x = 287,231,756,915.57/640,260.72
  6. Step 6: Final answer
    x = 448,616.86

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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.