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Finding the Fourth Proportional to 455,133.70, 636,006.20 and 455,133.70

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Solution

The fourth proportional to 455,133.70, 636,006.20 and 455,133.70 is: 636,006.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,133.70 : 636,006.20 = 455,133.70 : x
  2. Step 2: Convert to fraction form
    455,133.70/636,006.20 = 455,133.70/x
  3. Step 3: Cross multiply
    455,133.70x = 636,006.20 × 455,133.70
  4. Step 4: Simplify right side
    455,133.70x = 289,467,855,028.94
  5. Step 5: Solve for x
    x = 289,467,855,028.94/455,133.70
  6. Step 6: Final answer
    x = 636,006.20

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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.