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Finding the Fourth Proportional to 691,635.88, 954,464.80 and 389,829.88

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Solution

The fourth proportional to 691,635.88, 954,464.80 and 389,829.88 is: 537,969.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,635.88 : 954,464.80 = 389,829.88 : x
  2. Step 2: Convert to fraction form
    691,635.88/954,464.80 = 389,829.88/x
  3. Step 3: Cross multiply
    691,635.88x = 954,464.80 × 389,829.88
  4. Step 4: Simplify right side
    691,635.88x = 372,078,893,675.90
  5. Step 5: Solve for x
    x = 372,078,893,675.90/691,635.88
  6. Step 6: Final answer
    x = 537,969.34

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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.