Home / 787,397.80-1,086,786.72-481,729.02

Finding the Fourth Proportional to 787,397.80, 1,086,786.72 and 481,729.02

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Solution

The fourth proportional to 787,397.80, 1,086,786.72 and 481,729.02 is: 664,894.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,397.80 : 1,086,786.72 = 481,729.02 : x
  2. Step 2: Convert to fraction form
    787,397.80/1,086,786.72 = 481,729.02/x
  3. Step 3: Cross multiply
    787,397.80x = 1,086,786.72 × 481,729.02
  4. Step 4: Simplify right side
    787,397.80x = 523,536,701,574.61
  5. Step 5: Solve for x
    x = 523,536,701,574.61/787,397.80
  6. Step 6: Final answer
    x = 664,894.80

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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.