Home / 418,212,822.80-627,319,234.20-280,463,315.60

Finding the Fourth Proportional to 418,212,822.80, 627,319,234.20 and 280,463,315.60

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Solution

The fourth proportional to 418,212,822.80, 627,319,234.20 and 280,463,315.60 is: 420,694,973.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,212,822.80 : 627,319,234.20 = 280,463,315.60 : x
  2. Step 2: Convert to fraction form
    418,212,822.80/627,319,234.20 = 280,463,315.60/x
  3. Step 3: Cross multiply
    418,212,822.80x = 627,319,234.20 × 280,463,315.60
  4. Step 4: Simplify right side
    418,212,822.80x = 175,940,032,363,384,928
  5. Step 5: Solve for x
    x = 175,940,032,363,384,928/418,212,822.80
  6. Step 6: Final answer
    x = 420,694,973.40

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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.