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Finding the Fourth Proportional to 894,392.80, 1,341,128.40 and 333,138.40

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Solution

The fourth proportional to 894,392.80, 1,341,128.40 and 333,138.40 is: 499,535.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    894,392.80 : 1,341,128.40 = 333,138.40 : x
  2. Step 2: Convert to fraction form
    894,392.80/1,341,128.40 = 333,138.40/x
  3. Step 3: Cross multiply
    894,392.80x = 1,341,128.40 × 333,138.40
  4. Step 4: Simplify right side
    894,392.80x = 446,781,369,370.56
  5. Step 5: Solve for x
    x = 446,781,369,370.56/894,392.80
  6. Step 6: Final answer
    x = 499,535.96

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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.