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Finding the Fourth Proportional to 777,211.60, 1,166,335.80 and 356,270.80

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Solution

The fourth proportional to 777,211.60, 1,166,335.80 and 356,270.80 is: 534,643.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,211.60 : 1,166,335.80 = 356,270.80 : x
  2. Step 2: Convert to fraction form
    777,211.60/1,166,335.80 = 356,270.80/x
  3. Step 3: Cross multiply
    777,211.60x = 1,166,335.80 × 356,270.80
  4. Step 4: Simplify right side
    777,211.60x = 415,531,388,534.64
  5. Step 5: Solve for x
    x = 415,531,388,534.64/777,211.60
  6. Step 6: Final answer
    x = 534,643.83

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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.