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Finding the Fourth Proportional to 984,376.20, 1,379,059.80 and 984,376.20

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Solution

The fourth proportional to 984,376.20, 1,379,059.80 and 984,376.20 is: 1,379,059.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    984,376.20 : 1,379,059.80 = 984,376.20 : x
  2. Step 2: Convert to fraction form
    984,376.20/1,379,059.80 = 984,376.20/x
  3. Step 3: Cross multiply
    984,376.20x = 1,379,059.80 × 984,376.20
  4. Step 4: Simplify right side
    984,376.20x = 1,357,513,645,496.76
  5. Step 5: Solve for x
    x = 1,357,513,645,496.76/984,376.20
  6. Step 6: Final answer
    x = 1,379,059.80

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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.