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Finding the Fourth Proportional to 495,523, 683,810.58 and 288,778.60

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Solution

The fourth proportional to 495,523, 683,810.58 and 288,778.60 is: 398,507.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,523 : 683,810.58 = 288,778.60 : x
  2. Step 2: Convert to fraction form
    495,523/683,810.58 = 288,778.60/x
  3. Step 3: Cross multiply
    495,523x = 683,810.58 × 288,778.60
  4. Step 4: Simplify right side
    495,523x = 197,469,861,957.59
  5. Step 5: Solve for x
    x = 197,469,861,957.59/495,523
  6. Step 6: Final answer
    x = 398,507.96

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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.