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Finding the Fourth Proportional to 647,425.94, 969,256.72 and 376,729.08

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Solution

The fourth proportional to 647,425.94, 969,256.72 and 376,729.08 is: 563,998.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,425.94 : 969,256.72 = 376,729.08 : x
  2. Step 2: Convert to fraction form
    647,425.94/969,256.72 = 376,729.08/x
  3. Step 3: Cross multiply
    647,425.94x = 969,256.72 × 376,729.08
  4. Step 4: Simplify right side
    647,425.94x = 365,147,192,409.42
  5. Step 5: Solve for x
    x = 365,147,192,409.42/647,425.94
  6. Step 6: Final answer
    x = 563,998.40

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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.