Home / 851,440,519.20-1,277,160,778.80-621,858,007.20

Finding the Fourth Proportional to 851,440,519.20, 1,277,160,778.80 and 621,858,007.20

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Solution

The fourth proportional to 851,440,519.20, 1,277,160,778.80 and 621,858,007.20 is: 932,787,010.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,440,519.20 : 1,277,160,778.80 = 621,858,007.20 : x
  2. Step 2: Convert to fraction form
    851,440,519.20/1,277,160,778.80 = 621,858,007.20/x
  3. Step 3: Cross multiply
    851,440,519.20x = 1,277,160,778.80 × 621,858,007.20
  4. Step 4: Simplify right side
    851,440,519.20x = 794,212,656,778,568,064
  5. Step 5: Solve for x
    x = 794,212,656,778,568,064/851,440,519.20
  6. Step 6: Final answer
    x = 932,787,010.80

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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.