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Finding the Fourth Proportional to 469,734.62, 648,401.88 and 278,747.96

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Solution

The fourth proportional to 469,734.62, 648,401.88 and 278,747.96 is: 384,771.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,734.62 : 648,401.88 = 278,747.96 : x
  2. Step 2: Convert to fraction form
    469,734.62/648,401.88 = 278,747.96/x
  3. Step 3: Cross multiply
    469,734.62x = 648,401.88 × 278,747.96
  4. Step 4: Simplify right side
    469,734.62x = 180,740,701,310.17
  5. Step 5: Solve for x
    x = 180,740,701,310.17/469,734.62
  6. Step 6: Final answer
    x = 384,771.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.