Home / 1,485,205.60-2,227,589.70-420,355.30

Finding the Fourth Proportional to 1,485,205.60, 2,227,589.70 and 420,355.30

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Solution

The fourth proportional to 1,485,205.60, 2,227,589.70 and 420,355.30 is: 630,471.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485,205.60 : 2,227,589.70 = 420,355.30 : x
  2. Step 2: Convert to fraction form
    1,485,205.60/2,227,589.70 = 420,355.30/x
  3. Step 3: Cross multiply
    1,485,205.60x = 2,227,589.70 × 420,355.30
  4. Step 4: Simplify right side
    1,485,205.60x = 936,379,136,620.41
  5. Step 5: Solve for x
    x = 936,379,136,620.41/1,485,205.60
  6. Step 6: Final answer
    x = 630,471.05

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Double scale
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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.