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Finding the Fourth Proportional to 551,479.80, 827,219.70 and 298,881.30

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Solution

The fourth proportional to 551,479.80, 827,219.70 and 298,881.30 is: 448,321.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,479.80 : 827,219.70 = 298,881.30 : x
  2. Step 2: Convert to fraction form
    551,479.80/827,219.70 = 298,881.30/x
  3. Step 3: Cross multiply
    551,479.80x = 827,219.70 × 298,881.30
  4. Step 4: Simplify right side
    551,479.80x = 247,240,499,321.61
  5. Step 5: Solve for x
    x = 247,240,499,321.61/551,479.80
  6. Step 6: Final answer
    x = 448,321.95

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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.