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Finding the Fourth Proportional to 892,706.40, 1,339,059.60 and 331,624.80

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Solution

The fourth proportional to 892,706.40, 1,339,059.60 and 331,624.80 is: 497,437.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    892,706.40 : 1,339,059.60 = 331,624.80 : x
  2. Step 2: Convert to fraction form
    892,706.40/1,339,059.60 = 331,624.80/x
  3. Step 3: Cross multiply
    892,706.40x = 1,339,059.60 × 331,624.80
  4. Step 4: Simplify right side
    892,706.40x = 444,065,372,038.08
  5. Step 5: Solve for x
    x = 444,065,372,038.08/892,706.40
  6. Step 6: Final answer
    x = 497,437.20

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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.