Home / 484,511,857.20-726,767,785.80-280,438,513.20

Finding the Fourth Proportional to 484,511,857.20, 726,767,785.80 and 280,438,513.20

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Solution

The fourth proportional to 484,511,857.20, 726,767,785.80 and 280,438,513.20 is: 420,657,769.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,511,857.20 : 726,767,785.80 = 280,438,513.20 : x
  2. Step 2: Convert to fraction form
    484,511,857.20/726,767,785.80 = 280,438,513.20/x
  3. Step 3: Cross multiply
    484,511,857.20x = 726,767,785.80 × 280,438,513.20
  4. Step 4: Simplify right side
    484,511,857.20x = 203,813,677,291,408,064
  5. Step 5: Solve for x
    x = 203,813,677,291,408,064/484,511,857.20
  6. Step 6: Final answer
    x = 420,657,769.80

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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.