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Finding the Fourth Proportional to 957,662.40, 1,436,378.40 and 396,638.40

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Solution

The fourth proportional to 957,662.40, 1,436,378.40 and 396,638.40 is: 594,909.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    957,662.40 : 1,436,378.40 = 396,638.40 : x
  2. Step 2: Convert to fraction form
    957,662.40/1,436,378.40 = 396,638.40/x
  3. Step 3: Cross multiply
    957,662.40x = 1,436,378.40 × 396,638.40
  4. Step 4: Simplify right side
    957,662.40x = 569,722,830,370.56
  5. Step 5: Solve for x
    x = 569,722,830,370.56/957,662.40
  6. Step 6: Final answer
    x = 594,909.89

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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.