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Finding the Fourth Proportional to 649,492.40, 974,238.60 and 413,879.60

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Solution

The fourth proportional to 649,492.40, 974,238.60 and 413,879.60 is: 620,819.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,492.40 : 974,238.60 = 413,879.60 : x
  2. Step 2: Convert to fraction form
    649,492.40/974,238.60 = 413,879.60/x
  3. Step 3: Cross multiply
    649,492.40x = 974,238.60 × 413,879.60
  4. Step 4: Simplify right side
    649,492.40x = 403,217,482,072.56
  5. Step 5: Solve for x
    x = 403,217,482,072.56/649,492.40
  6. Step 6: Final answer
    x = 620,819.40

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Similar ratio
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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.