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Finding the Fourth Proportional to 610,321.20, 915,627.60 and 294,518.40

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Solution

The fourth proportional to 610,321.20, 915,627.60 and 294,518.40 is: 441,847.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,321.20 : 915,627.60 = 294,518.40 : x
  2. Step 2: Convert to fraction form
    610,321.20/915,627.60 = 294,518.40/x
  3. Step 3: Cross multiply
    610,321.20x = 915,627.60 × 294,518.40
  4. Step 4: Simplify right side
    610,321.20x = 269,669,175,747.84
  5. Step 5: Solve for x
    x = 269,669,175,747.84/610,321.20
  6. Step 6: Final answer
    x = 441,847.96

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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.