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Finding the Fourth Proportional to 808,658.60, 1,213,133.70 and 335,391.80

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Solution

The fourth proportional to 808,658.60, 1,213,133.70 and 335,391.80 is: 503,148.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,658.60 : 1,213,133.70 = 335,391.80 : x
  2. Step 2: Convert to fraction form
    808,658.60/1,213,133.70 = 335,391.80/x
  3. Step 3: Cross multiply
    808,658.60x = 1,213,133.70 × 335,391.80
  4. Step 4: Simplify right side
    808,658.60x = 406,875,095,283.66
  5. Step 5: Solve for x
    x = 406,875,095,283.66/808,658.60
  6. Step 6: Final answer
    x = 503,148.17

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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.