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Finding the Fourth Proportional to 620,950.50, 931,787.18 and 261,095.31

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Solution

The fourth proportional to 620,950.50, 931,787.18 and 261,095.31 is: 391,794.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,950.50 : 931,787.18 = 261,095.31 : x
  2. Step 2: Convert to fraction form
    620,950.50/931,787.18 = 261,095.31/x
  3. Step 3: Cross multiply
    620,950.50x = 931,787.18 × 261,095.31
  4. Step 4: Simplify right side
    620,950.50x = 243,285,261,310.65
  5. Step 5: Solve for x
    x = 243,285,261,310.65/620,950.50
  6. Step 6: Final answer
    x = 391,794.94

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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.