Home / 787,262.72-1,086,391.20-465,076.40

Finding the Fourth Proportional to 787,262.72, 1,086,391.20 and 465,076.40

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Solution

The fourth proportional to 787,262.72, 1,086,391.20 and 465,076.40 is: 641,786.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,262.72 : 1,086,391.20 = 465,076.40 : x
  2. Step 2: Convert to fraction form
    787,262.72/1,086,391.20 = 465,076.40/x
  3. Step 3: Cross multiply
    787,262.72x = 1,086,391.20 × 465,076.40
  4. Step 4: Simplify right side
    787,262.72x = 505,254,908,287.68
  5. Step 5: Solve for x
    x = 505,254,908,287.68/787,262.72
  6. Step 6: Final answer
    x = 641,786.91

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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.