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Finding the Fourth Proportional to 651,198.64, 898,646.24 and 379,310.80

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Solution

The fourth proportional to 651,198.64, 898,646.24 and 379,310.80 is: 523,444.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,198.64 : 898,646.24 = 379,310.80 : x
  2. Step 2: Convert to fraction form
    651,198.64/898,646.24 = 379,310.80/x
  3. Step 3: Cross multiply
    651,198.64x = 898,646.24 × 379,310.80
  4. Step 4: Simplify right side
    651,198.64x = 340,866,224,211.39
  5. Step 5: Solve for x
    x = 340,866,224,211.39/651,198.64
  6. Step 6: Final answer
    x = 523,444.31

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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.