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Finding the Fourth Proportional to 512,467.60, 768,701.40 and 484,911.40

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Solution

The fourth proportional to 512,467.60, 768,701.40 and 484,911.40 is: 727,367.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,467.60 : 768,701.40 = 484,911.40 : x
  2. Step 2: Convert to fraction form
    512,467.60/768,701.40 = 484,911.40/x
  3. Step 3: Cross multiply
    512,467.60x = 768,701.40 × 484,911.40
  4. Step 4: Simplify right side
    512,467.60x = 372,752,072,055.96
  5. Step 5: Solve for x
    x = 372,752,072,055.96/512,467.60
  6. Step 6: Final answer
    x = 727,367.10

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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.