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Finding the Fourth Proportional to 548,636.30, 768,615.70 and 548,636.30

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Solution

The fourth proportional to 548,636.30, 768,615.70 and 548,636.30 is: 768,615.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,636.30 : 768,615.70 = 548,636.30 : x
  2. Step 2: Convert to fraction form
    548,636.30/768,615.70 = 548,636.30/x
  3. Step 3: Cross multiply
    548,636.30x = 768,615.70 × 548,636.30
  4. Step 4: Simplify right side
    548,636.30x = 421,690,473,769.91
  5. Step 5: Solve for x
    x = 421,690,473,769.91/548,636.30
  6. Step 6: Final answer
    x = 768,615.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.