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Finding the Fourth Proportional to 809,230.80, 1,213,327.80 and 336,104.40

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Solution

The fourth proportional to 809,230.80, 1,213,327.80 and 336,104.40 is: 503,941.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,230.80 : 1,213,327.80 = 336,104.40 : x
  2. Step 2: Convert to fraction form
    809,230.80/1,213,327.80 = 336,104.40/x
  3. Step 3: Cross multiply
    809,230.80x = 1,213,327.80 × 336,104.40
  4. Step 4: Simplify right side
    809,230.80x = 407,804,812,222.32
  5. Step 5: Solve for x
    x = 407,804,812,222.32/809,230.80
  6. Step 6: Final answer
    x = 503,941.29

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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.