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Finding the Fourth Proportional to 606,803.40, 910,205.10 and 207,408.60

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Solution

The fourth proportional to 606,803.40, 910,205.10 and 207,408.60 is: 311,112.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,803.40 : 910,205.10 = 207,408.60 : x
  2. Step 2: Convert to fraction form
    606,803.40/910,205.10 = 207,408.60/x
  3. Step 3: Cross multiply
    606,803.40x = 910,205.10 × 207,408.60
  4. Step 4: Simplify right side
    606,803.40x = 188,784,365,503.86
  5. Step 5: Solve for x
    x = 188,784,365,503.86/606,803.40
  6. Step 6: Final answer
    x = 311,112.90

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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.