Home / 639,077,520.80-957,954,932.40-347,328,221.60

Finding the Fourth Proportional to 639,077,520.80, 957,954,932.40 and 347,328,221.60

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Solution

The fourth proportional to 639,077,520.80, 957,954,932.40 and 347,328,221.60 is: 520,632,900.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,077,520.80 : 957,954,932.40 = 347,328,221.60 : x
  2. Step 2: Convert to fraction form
    639,077,520.80/957,954,932.40 = 347,328,221.60/x
  3. Step 3: Cross multiply
    639,077,520.80x = 957,954,932.40 × 347,328,221.60
  4. Step 4: Simplify right side
    639,077,520.80x = 332,724,783,043,440,256
  5. Step 5: Solve for x
    x = 332,724,783,043,440,256/639,077,520.80
  6. Step 6: Final answer
    x = 520,632,900.10

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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.