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Finding the Fourth Proportional to 518,519.20, 777,778.80 and 483,089.80

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Solution

The fourth proportional to 518,519.20, 777,778.80 and 483,089.80 is: 724,634.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,519.20 : 777,778.80 = 483,089.80 : x
  2. Step 2: Convert to fraction form
    518,519.20/777,778.80 = 483,089.80/x
  3. Step 3: Cross multiply
    518,519.20x = 777,778.80 × 483,089.80
  4. Step 4: Simplify right side
    518,519.20x = 375,737,004,936.24
  5. Step 5: Solve for x
    x = 375,737,004,936.24/518,519.20
  6. Step 6: Final answer
    x = 724,634.70

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1.5x scale

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.