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Finding the Fourth Proportional to 669,872.88, 924,257.88 and 397,826.64

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Solution

The fourth proportional to 669,872.88, 924,257.88 and 397,826.64 is: 548,901.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,872.88 : 924,257.88 = 397,826.64 : x
  2. Step 2: Convert to fraction form
    669,872.88/924,257.88 = 397,826.64/x
  3. Step 3: Cross multiply
    669,872.88x = 924,257.88 × 397,826.64
  4. Step 4: Simplify right side
    669,872.88x = 367,694,406,893.92
  5. Step 5: Solve for x
    x = 367,694,406,893.92/669,872.88
  6. Step 6: Final answer
    x = 548,901.77

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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.