Home / 426,163,669.20-639,245,503.80-196,581,157.20

Finding the Fourth Proportional to 426,163,669.20, 639,245,503.80 and 196,581,157.20

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Solution

The fourth proportional to 426,163,669.20, 639,245,503.80 and 196,581,157.20 is: 294,871,735.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,163,669.20 : 639,245,503.80 = 196,581,157.20 : x
  2. Step 2: Convert to fraction form
    426,163,669.20/639,245,503.80 = 196,581,157.20/x
  3. Step 3: Cross multiply
    426,163,669.20x = 639,245,503.80 × 196,581,157.20
  4. Step 4: Simplify right side
    426,163,669.20x = 125,663,620,871,900,976
  5. Step 5: Solve for x
    x = 125,663,620,871,900,976/426,163,669.20
  6. Step 6: Final answer
    x = 294,871,735.80

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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.