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Finding the Fourth Proportional to 768,185.32, 1,059,800.10 and 481,205.80

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Solution

The fourth proportional to 768,185.32, 1,059,800.10 and 481,205.80 is: 663,878.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,185.32 : 1,059,800.10 = 481,205.80 : x
  2. Step 2: Convert to fraction form
    768,185.32/1,059,800.10 = 481,205.80/x
  3. Step 3: Cross multiply
    768,185.32x = 1,059,800.10 × 481,205.80
  4. Step 4: Simplify right side
    768,185.32x = 509,981,954,960.58
  5. Step 5: Solve for x
    x = 509,981,954,960.58/768,185.32
  6. Step 6: Final answer
    x = 663,878.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.