Home / 808,474.70-1,213,696.20-408,909.80

Finding the Fourth Proportional to 808,474.70, 1,213,696.20 and 408,909.80

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Solution

The fourth proportional to 808,474.70, 1,213,696.20 and 408,909.80 is: 613,862.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,474.70 : 1,213,696.20 = 408,909.80 : x
  2. Step 2: Convert to fraction form
    808,474.70/1,213,696.20 = 408,909.80/x
  3. Step 3: Cross multiply
    808,474.70x = 1,213,696.20 × 408,909.80
  4. Step 4: Simplify right side
    808,474.70x = 496,292,270,402.76
  5. Step 5: Solve for x
    x = 496,292,270,402.76/808,474.70
  6. Step 6: Final answer
    x = 613,862.46

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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.