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Finding the Fourth Proportional to 606,811.40, 910,217.10 and 207,416.60

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Solution

The fourth proportional to 606,811.40, 910,217.10 and 207,416.60 is: 311,124.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,811.40 : 910,217.10 = 207,416.60 : x
  2. Step 2: Convert to fraction form
    606,811.40/910,217.10 = 207,416.60/x
  3. Step 3: Cross multiply
    606,811.40x = 910,217.10 × 207,416.60
  4. Step 4: Simplify right side
    606,811.40x = 188,794,136,143.86
  5. Step 5: Solve for x
    x = 188,794,136,143.86/606,811.40
  6. Step 6: Final answer
    x = 311,124.90

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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.