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Finding the Fourth Proportional to 615,689.20, 923,631 and 260,705.44

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Solution

The fourth proportional to 615,689.20, 923,631 and 260,705.44 is: 391,099.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,689.20 : 923,631 = 260,705.44 : x
  2. Step 2: Convert to fraction form
    615,689.20/923,631 = 260,705.44/x
  3. Step 3: Cross multiply
    615,689.20x = 923,631 × 260,705.44
  4. Step 4: Simplify right side
    615,689.20x = 240,795,626,252.64
  5. Step 5: Solve for x
    x = 240,795,626,252.64/615,689.20
  6. Step 6: Final answer
    x = 391,099.32

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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.