Home / 787,397.30-1,086,786.03-481,728.51

Finding the Fourth Proportional to 787,397.30, 1,086,786.03 and 481,728.51

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Solution

The fourth proportional to 787,397.30, 1,086,786.03 and 481,728.51 is: 664,894.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,397.30 : 1,086,786.03 = 481,728.51 : x
  2. Step 2: Convert to fraction form
    787,397.30/1,086,786.03 = 481,728.51/x
  3. Step 3: Cross multiply
    787,397.30x = 1,086,786.03 × 481,728.51
  4. Step 4: Simplify right side
    787,397.30x = 523,535,814,920.72
  5. Step 5: Solve for x
    x = 523,535,814,920.72/787,397.30
  6. Step 6: Final answer
    x = 664,894.10

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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.