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Finding the Fourth Proportional to 411,375.60, 617,063.40 and 328,431.60

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Solution

The fourth proportional to 411,375.60, 617,063.40 and 328,431.60 is: 492,647.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,375.60 : 617,063.40 = 328,431.60 : x
  2. Step 2: Convert to fraction form
    411,375.60/617,063.40 = 328,431.60/x
  3. Step 3: Cross multiply
    411,375.60x = 617,063.40 × 328,431.60
  4. Step 4: Simplify right side
    411,375.60x = 202,663,119,763.44
  5. Step 5: Solve for x
    x = 202,663,119,763.44/411,375.60
  6. Step 6: Final answer
    x = 492,647.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.