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Finding the Fourth Proportional to 615,688.70, 923,630.25 and 260,704.94

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Solution

The fourth proportional to 615,688.70, 923,630.25 and 260,704.94 is: 391,098.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,688.70 : 923,630.25 = 260,704.94 : x
  2. Step 2: Convert to fraction form
    615,688.70/923,630.25 = 260,704.94/x
  3. Step 3: Cross multiply
    615,688.70x = 923,630.25 × 260,704.94
  4. Step 4: Simplify right side
    615,688.70x = 240,794,968,908.44
  5. Step 5: Solve for x
    x = 240,794,968,908.44/615,688.70
  6. Step 6: Final answer
    x = 391,098.57

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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.