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Finding the Fourth Proportional to 455,134.70, 636,007.60 and 455,134.70

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Solution

The fourth proportional to 455,134.70, 636,007.60 and 455,134.70 is: 636,007.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,134.70 : 636,007.60 = 455,134.70 : x
  2. Step 2: Convert to fraction form
    455,134.70/636,007.60 = 455,134.70/x
  3. Step 3: Cross multiply
    455,134.70x = 636,007.60 × 455,134.70
  4. Step 4: Simplify right side
    455,134.70x = 289,469,128,223.72
  5. Step 5: Solve for x
    x = 289,469,128,223.72/455,134.70
  6. Step 6: Final answer
    x = 636,007.60

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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.