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Finding the Fourth Proportional to 405,294.54, 607,940.85 and 380,632.35

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Solution

The fourth proportional to 405,294.54, 607,940.85 and 380,632.35 is: 570,947.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,294.54 : 607,940.85 = 380,632.35 : x
  2. Step 2: Convert to fraction form
    405,294.54/607,940.85 = 380,632.35/x
  3. Step 3: Cross multiply
    405,294.54x = 607,940.85 × 380,632.35
  4. Step 4: Simplify right side
    405,294.54x = 231,401,954,396.50
  5. Step 5: Solve for x
    x = 231,401,954,396.50/405,294.54
  6. Step 6: Final answer
    x = 570,947.62

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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.