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Finding the Fourth Proportional to 644,859.26, 965,813.60 and 308,136.60

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Solution

The fourth proportional to 644,859.26, 965,813.60 and 308,136.60 is: 461,499.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,859.26 : 965,813.60 = 308,136.60 : x
  2. Step 2: Convert to fraction form
    644,859.26/965,813.60 = 308,136.60/x
  3. Step 3: Cross multiply
    644,859.26x = 965,813.60 × 308,136.60
  4. Step 4: Simplify right side
    644,859.26x = 297,602,518,937.76
  5. Step 5: Solve for x
    x = 297,602,518,937.76/644,859.26
  6. Step 6: Final answer
    x = 461,499.95

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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.