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Finding the Fourth Proportional to 667,794.80, 1,001,011.80 and 330,316.40

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Solution

The fourth proportional to 667,794.80, 1,001,011.80 and 330,316.40 is: 495,138.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,794.80 : 1,001,011.80 = 330,316.40 : x
  2. Step 2: Convert to fraction form
    667,794.80/1,001,011.80 = 330,316.40/x
  3. Step 3: Cross multiply
    667,794.80x = 1,001,011.80 × 330,316.40
  4. Step 4: Simplify right side
    667,794.80x = 330,650,614,133.52
  5. Step 5: Solve for x
    x = 330,650,614,133.52/667,794.80
  6. Step 6: Final answer
    x = 495,138.05

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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.