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Finding the Fourth Proportional to 624,695.70, 936,766.53 and 287,654.70

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Solution

The fourth proportional to 624,695.70, 936,766.53 and 287,654.70 is: 431,354.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,695.70 : 936,766.53 = 287,654.70 : x
  2. Step 2: Convert to fraction form
    624,695.70/936,766.53 = 287,654.70/x
  3. Step 3: Cross multiply
    624,695.70x = 936,766.53 × 287,654.70
  4. Step 4: Simplify right side
    624,695.70x = 269,465,295,157.19
  5. Step 5: Solve for x
    x = 269,465,295,157.19/624,695.70
  6. Step 6: Final answer
    x = 431,354.49

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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.