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Finding the Fourth Proportional to 455,205.45, 636,106.65 and 455,205.45

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Solution

The fourth proportional to 455,205.45, 636,106.65 and 455,205.45 is: 636,106.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,205.45 : 636,106.65 = 455,205.45 : x
  2. Step 2: Convert to fraction form
    455,205.45/636,106.65 = 455,205.45/x
  3. Step 3: Cross multiply
    455,205.45x = 636,106.65 × 455,205.45
  4. Step 4: Simplify right side
    455,205.45x = 289,559,213,861.24
  5. Step 5: Solve for x
    x = 289,559,213,861.24/455,205.45
  6. Step 6: Final answer
    x = 636,106.65

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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.