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Finding the Fourth Proportional to 777,810.60, 1,166,448.60 and 378,193.86

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Solution

The fourth proportional to 777,810.60, 1,166,448.60 and 378,193.86 is: 567,160.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,810.60 : 1,166,448.60 = 378,193.86 : x
  2. Step 2: Convert to fraction form
    777,810.60/1,166,448.60 = 378,193.86/x
  3. Step 3: Cross multiply
    777,810.60x = 1,166,448.60 × 378,193.86
  4. Step 4: Simplify right side
    777,810.60x = 441,143,698,525.60
  5. Step 5: Solve for x
    x = 441,143,698,525.60/777,810.60
  6. Step 6: Final answer
    x = 567,160.82

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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.