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Finding the Fourth Proportional to 808,509.60, 1,212,910.20 and 335,242.80

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Solution

The fourth proportional to 808,509.60, 1,212,910.20 and 335,242.80 is: 502,924.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,509.60 : 1,212,910.20 = 335,242.80 : x
  2. Step 2: Convert to fraction form
    808,509.60/1,212,910.20 = 335,242.80/x
  3. Step 3: Cross multiply
    808,509.60x = 1,212,910.20 × 335,242.80
  4. Step 4: Simplify right side
    808,509.60x = 406,619,411,596.56
  5. Step 5: Solve for x
    x = 406,619,411,596.56/808,509.60
  6. Step 6: Final answer
    x = 502,924.65

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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.