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Finding the Fourth Proportional to 851,804.40, 1,277,245.80 and 353,218.80

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Solution

The fourth proportional to 851,804.40, 1,277,245.80 and 353,218.80 is: 529,637.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,804.40 : 1,277,245.80 = 353,218.80 : x
  2. Step 2: Convert to fraction form
    851,804.40/1,277,245.80 = 353,218.80/x
  3. Step 3: Cross multiply
    851,804.40x = 1,277,245.80 × 353,218.80
  4. Step 4: Simplify right side
    851,804.40x = 451,147,228,781.04
  5. Step 5: Solve for x
    x = 451,147,228,781.04/851,804.40
  6. Step 6: Final answer
    x = 529,637.12

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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.