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Finding the Fourth Proportional to 455,223.70, 636,132.20 and 455,223.70

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Solution

The fourth proportional to 455,223.70, 636,132.20 and 455,223.70 is: 636,132.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,223.70 : 636,132.20 = 455,223.70 : x
  2. Step 2: Convert to fraction form
    455,223.70/636,132.20 = 455,223.70/x
  3. Step 3: Cross multiply
    455,223.70x = 636,132.20 × 455,223.70
  4. Step 4: Simplify right side
    455,223.70x = 289,582,453,773.14
  5. Step 5: Solve for x
    x = 289,582,453,773.14/455,223.70
  6. Step 6: Final answer
    x = 636,132.20

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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.