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Finding the Fourth Proportional to 455,209.70, 636,112.60 and 455,209.70

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Solution

The fourth proportional to 455,209.70, 636,112.60 and 455,209.70 is: 636,112.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,209.70 : 636,112.60 = 455,209.70 : x
  2. Step 2: Convert to fraction form
    455,209.70/636,112.60 = 455,209.70/x
  3. Step 3: Cross multiply
    455,209.70x = 636,112.60 × 455,209.70
  4. Step 4: Simplify right side
    455,209.70x = 289,564,625,812.22
  5. Step 5: Solve for x
    x = 289,564,625,812.22/455,209.70
  6. Step 6: Final answer
    x = 636,112.60

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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.