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Finding the Fourth Proportional to 521,023.80, 782,337.60 and 284,827.80

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Solution

The fourth proportional to 521,023.80, 782,337.60 and 284,827.80 is: 427,680.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,023.80 : 782,337.60 = 284,827.80 : x
  2. Step 2: Convert to fraction form
    521,023.80/782,337.60 = 284,827.80/x
  3. Step 3: Cross multiply
    521,023.80x = 782,337.60 × 284,827.80
  4. Step 4: Simplify right side
    521,023.80x = 222,831,497,465.28
  5. Step 5: Solve for x
    x = 222,831,497,465.28/521,023.80
  6. Step 6: Final answer
    x = 427,680.07

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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.