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Finding the Fourth Proportional to 490,811.40, 736,217.10 and 469,816.20

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Solution

The fourth proportional to 490,811.40, 736,217.10 and 469,816.20 is: 704,724.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,811.40 : 736,217.10 = 469,816.20 : x
  2. Step 2: Convert to fraction form
    490,811.40/736,217.10 = 469,816.20/x
  3. Step 3: Cross multiply
    490,811.40x = 736,217.10 × 469,816.20
  4. Step 4: Simplify right side
    490,811.40x = 345,886,720,297.02
  5. Step 5: Solve for x
    x = 345,886,720,297.02/490,811.40
  6. Step 6: Final answer
    x = 704,724.30

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Double scale
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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.