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Finding the Fourth Proportional to 455,227.20, 636,137.10 and 455,227.20

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Solution

The fourth proportional to 455,227.20, 636,137.10 and 455,227.20 is: 636,137.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,227.20 : 636,137.10 = 455,227.20 : x
  2. Step 2: Convert to fraction form
    455,227.20/636,137.10 = 455,227.20/x
  3. Step 3: Cross multiply
    455,227.20x = 636,137.10 × 455,227.20
  4. Step 4: Simplify right side
    455,227.20x = 289,586,910,849.12
  5. Step 5: Solve for x
    x = 289,586,910,849.12/455,227.20
  6. Step 6: Final answer
    x = 636,137.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.