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Finding the Fourth Proportional to 489,029.80, 733,544.70 and 485,919.40

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Solution

The fourth proportional to 489,029.80, 733,544.70 and 485,919.40 is: 728,879.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,029.80 : 733,544.70 = 485,919.40 : x
  2. Step 2: Convert to fraction form
    489,029.80/733,544.70 = 485,919.40/x
  3. Step 3: Cross multiply
    489,029.80x = 733,544.70 × 485,919.40
  4. Step 4: Simplify right side
    489,029.80x = 356,443,600,497.18
  5. Step 5: Solve for x
    x = 356,443,600,497.18/489,029.80
  6. Step 6: Final answer
    x = 728,879.10

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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.