Home / 768,583.79-1,152,930.81-221,453.80

Finding the Fourth Proportional to 768,583.79, 1,152,930.81 and 221,453.80

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Solution

The fourth proportional to 768,583.79, 1,152,930.81 and 221,453.80 is: 332,196.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,583.79 : 1,152,930.81 = 221,453.80 : x
  2. Step 2: Convert to fraction form
    768,583.79/1,152,930.81 = 221,453.80/x
  3. Step 3: Cross multiply
    768,583.79x = 1,152,930.81 × 221,453.80
  4. Step 4: Simplify right side
    768,583.79x = 255,320,906,959.70
  5. Step 5: Solve for x
    x = 255,320,906,959.70/768,583.79
  6. Step 6: Final answer
    x = 332,196.58

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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.