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Finding the Fourth Proportional to 495,600.12, 683,906.16 and 280,735.86

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Solution

The fourth proportional to 495,600.12, 683,906.16 and 280,735.86 is: 387,403.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,600.12 : 683,906.16 = 280,735.86 : x
  2. Step 2: Convert to fraction form
    495,600.12/683,906.16 = 280,735.86/x
  3. Step 3: Cross multiply
    495,600.12x = 683,906.16 × 280,735.86
  4. Step 4: Simplify right side
    495,600.12x = 191,996,983,986.90
  5. Step 5: Solve for x
    x = 191,996,983,986.90/495,600.12
  6. Step 6: Final answer
    x = 387,403.02

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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.