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Finding the Fourth Proportional to 548,636.80, 768,616.40 and 548,636.80

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Solution

The fourth proportional to 548,636.80, 768,616.40 and 548,636.80 is: 768,616.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,636.80 : 768,616.40 = 548,636.80 : x
  2. Step 2: Convert to fraction form
    548,636.80/768,616.40 = 548,636.80/x
  3. Step 3: Cross multiply
    548,636.80x = 768,616.40 × 548,636.80
  4. Step 4: Simplify right side
    548,636.80x = 421,691,242,123.52
  5. Step 5: Solve for x
    x = 421,691,242,123.52/548,636.80
  6. Step 6: Final answer
    x = 768,616.40

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1.5x scale

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.