Home / 667,347,076.80-1,001,020,615.20-394,577,438.40

Finding the Fourth Proportional to 667,347,076.80, 1,001,020,615.20 and 394,577,438.40

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Solution

The fourth proportional to 667,347,076.80, 1,001,020,615.20 and 394,577,438.40 is: 591,866,157.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,347,076.80 : 1,001,020,615.20 = 394,577,438.40 : x
  2. Step 2: Convert to fraction form
    667,347,076.80/1,001,020,615.20 = 394,577,438.40/x
  3. Step 3: Cross multiply
    667,347,076.80x = 1,001,020,615.20 × 394,577,438.40
  4. Step 4: Simplify right side
    667,347,076.80x = 394,980,150,131,208,128
  5. Step 5: Solve for x
    x = 394,980,150,131,208,128/667,347,076.80
  6. Step 6: Final answer
    x = 591,866,157.60

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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.