Home / 484,499,983.20-726,749,974.80-280,426,639.20

Finding the Fourth Proportional to 484,499,983.20, 726,749,974.80 and 280,426,639.20

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Solution

The fourth proportional to 484,499,983.20, 726,749,974.80 and 280,426,639.20 is: 420,639,958.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,499,983.20 : 726,749,974.80 = 280,426,639.20 : x
  2. Step 2: Convert to fraction form
    484,499,983.20/726,749,974.80 = 280,426,639.20/x
  3. Step 3: Cross multiply
    484,499,983.20x = 726,749,974.80 × 280,426,639.20
  4. Step 4: Simplify right side
    484,499,983.20x = 203,800,052,971,848,672
  5. Step 5: Solve for x
    x = 203,800,052,971,848,672/484,499,983.20
  6. Step 6: Final answer
    x = 420,639,958.80

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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.