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Finding the Fourth Proportional to 615,902.70, 923,724.45 and 260,928.30

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Solution

The fourth proportional to 615,902.70, 923,724.45 and 260,928.30 is: 391,337.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,902.70 : 923,724.45 = 260,928.30 : x
  2. Step 2: Convert to fraction form
    615,902.70/923,724.45 = 260,928.30/x
  3. Step 3: Cross multiply
    615,902.70x = 923,724.45 × 260,928.30
  4. Step 4: Simplify right side
    615,902.70x = 241,025,850,406.94
  5. Step 5: Solve for x
    x = 241,025,850,406.94/615,902.70
  6. Step 6: Final answer
    x = 391,337.54

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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.