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Finding the Fourth Proportional to 654,644.78, 903,395.61 and 379,014.26

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Solution

The fourth proportional to 654,644.78, 903,395.61 and 379,014.26 is: 523,031.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,644.78 : 903,395.61 = 379,014.26 : x
  2. Step 2: Convert to fraction form
    654,644.78/903,395.61 = 379,014.26/x
  3. Step 3: Cross multiply
    654,644.78x = 903,395.61 × 379,014.26
  4. Step 4: Simplify right side
    654,644.78x = 342,399,818,611.40
  5. Step 5: Solve for x
    x = 342,399,818,611.40/654,644.78
  6. Step 6: Final answer
    x = 523,031.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.