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Finding the Fourth Proportional to 809,315.60, 1,214,410.80 and 360,105.80

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Solution

The fourth proportional to 809,315.60, 1,214,410.80 and 360,105.80 is: 540,353.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,315.60 : 1,214,410.80 = 360,105.80 : x
  2. Step 2: Convert to fraction form
    809,315.60/1,214,410.80 = 360,105.80/x
  3. Step 3: Cross multiply
    809,315.60x = 1,214,410.80 × 360,105.80
  4. Step 4: Simplify right side
    809,315.60x = 437,316,372,662.64
  5. Step 5: Solve for x
    x = 437,316,372,662.64/809,315.60
  6. Step 6: Final answer
    x = 540,353.32

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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.