Home / 808,531.20-1,211,794.56-387,244.80

Finding the Fourth Proportional to 808,531.20, 1,211,794.56 and 387,244.80

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Solution

The fourth proportional to 808,531.20, 1,211,794.56 and 387,244.80 is: 580,387.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,531.20 : 1,211,794.56 = 387,244.80 : x
  2. Step 2: Convert to fraction form
    808,531.20/1,211,794.56 = 387,244.80/x
  3. Step 3: Cross multiply
    808,531.20x = 1,211,794.56 × 387,244.80
  4. Step 4: Simplify right side
    808,531.20x = 469,261,142,028.29
  5. Step 5: Solve for x
    x = 469,261,142,028.29/808,531.20
  6. Step 6: Final answer
    x = 580,387.18

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1.5x scale

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.