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Finding the Fourth Proportional to 644,807.40, 965,367.90 and 626,375.40

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Solution

The fourth proportional to 644,807.40, 965,367.90 and 626,375.40 is: 937,772.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,807.40 : 965,367.90 = 626,375.40 : x
  2. Step 2: Convert to fraction form
    644,807.40/965,367.90 = 626,375.40/x
  3. Step 3: Cross multiply
    644,807.40x = 965,367.90 × 626,375.40
  4. Step 4: Simplify right side
    644,807.40x = 604,682,704,509.66
  5. Step 5: Solve for x
    x = 604,682,704,509.66/644,807.40
  6. Step 6: Final answer
    x = 937,772.59

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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.