Home / 700,145,481.63-966,255,842.67-398,743,537.38

Finding the Fourth Proportional to 700,145,481.63, 966,255,842.67 and 398,743,537.38

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Solution

The fourth proportional to 700,145,481.63, 966,255,842.67 and 398,743,537.38 is: 550,297,449.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,145,481.63 : 966,255,842.67 = 398,743,537.38 : x
  2. Step 2: Convert to fraction form
    700,145,481.63/966,255,842.67 = 398,743,537.38/x
  3. Step 3: Cross multiply
    700,145,481.63x = 966,255,842.67 × 398,743,537.38
  4. Step 4: Simplify right side
    700,145,481.63x = 385,288,272,720,328,512
  5. Step 5: Solve for x
    x = 385,288,272,720,328,512/700,145,481.63
  6. Step 6: Final answer
    x = 550,297,449.36

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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.