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Finding the Fourth Proportional to 489,080.80, 733,621.20 and 317,838.70

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Solution

The fourth proportional to 489,080.80, 733,621.20 and 317,838.70 is: 476,758.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,080.80 : 733,621.20 = 317,838.70 : x
  2. Step 2: Convert to fraction form
    489,080.80/733,621.20 = 317,838.70/x
  3. Step 3: Cross multiply
    489,080.80x = 733,621.20 × 317,838.70
  4. Step 4: Simplify right side
    489,080.80x = 233,173,208,500.44
  5. Step 5: Solve for x
    x = 233,173,208,500.44/489,080.80
  6. Step 6: Final answer
    x = 476,758.05

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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.