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Finding the Fourth Proportional to 985,672.80, 1,383,674.40 and 985,672.80

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Solution

The fourth proportional to 985,672.80, 1,383,674.40 and 985,672.80 is: 1,383,674.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,672.80 : 1,383,674.40 = 985,672.80 : x
  2. Step 2: Convert to fraction form
    985,672.80/1,383,674.40 = 985,672.80/x
  3. Step 3: Cross multiply
    985,672.80x = 1,383,674.40 × 985,672.80
  4. Step 4: Simplify right side
    985,672.80x = 1,363,850,220,136.32
  5. Step 5: Solve for x
    x = 1,363,850,220,136.32/985,672.80
  6. Step 6: Final answer
    x = 1,383,674.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.