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Finding the Fourth Proportional to 829,804.40, 1,244,245.80 and 330,604.40

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Solution

The fourth proportional to 829,804.40, 1,244,245.80 and 330,604.40 is: 495,723.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,804.40 : 1,244,245.80 = 330,604.40 : x
  2. Step 2: Convert to fraction form
    829,804.40/1,244,245.80 = 330,604.40/x
  3. Step 3: Cross multiply
    829,804.40x = 1,244,245.80 × 330,604.40
  4. Step 4: Simplify right side
    829,804.40x = 411,353,136,161.52
  5. Step 5: Solve for x
    x = 411,353,136,161.52/829,804.40
  6. Step 6: Final answer
    x = 495,723.01

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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.