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Finding the Fourth Proportional to 531,101.20, 796,651.80 and 489,110.80

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Solution

The fourth proportional to 531,101.20, 796,651.80 and 489,110.80 is: 733,666.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,101.20 : 796,651.80 = 489,110.80 : x
  2. Step 2: Convert to fraction form
    531,101.20/796,651.80 = 489,110.80/x
  3. Step 3: Cross multiply
    531,101.20x = 796,651.80 × 489,110.80
  4. Step 4: Simplify right side
    531,101.20x = 389,650,999,219.44
  5. Step 5: Solve for x
    x = 389,650,999,219.44/531,101.20
  6. Step 6: Final answer
    x = 733,666.20

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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.