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Finding the Fourth Proportional to 828,992.80, 1,244,410.80 and 513,805.60

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Solution

The fourth proportional to 828,992.80, 1,244,410.80 and 513,805.60 is: 771,279.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,992.80 : 1,244,410.80 = 513,805.60 : x
  2. Step 2: Convert to fraction form
    828,992.80/1,244,410.80 = 513,805.60/x
  3. Step 3: Cross multiply
    828,992.80x = 1,244,410.80 × 513,805.60
  4. Step 4: Simplify right side
    828,992.80x = 639,385,237,740.48
  5. Step 5: Solve for x
    x = 639,385,237,740.48/828,992.80
  6. Step 6: Final answer
    x = 771,279.60

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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.