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Finding the Fourth Proportional to 492,837.40, 691,838.60 and 492,837.40

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Solution

The fourth proportional to 492,837.40, 691,838.60 and 492,837.40 is: 691,838.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,837.40 : 691,838.60 = 492,837.40 : x
  2. Step 2: Convert to fraction form
    492,837.40/691,838.60 = 492,837.40/x
  3. Step 3: Cross multiply
    492,837.40x = 691,838.60 × 492,837.40
  4. Step 4: Simplify right side
    492,837.40x = 340,963,936,843.64
  5. Step 5: Solve for x
    x = 340,963,936,843.64/492,837.40
  6. Step 6: Final answer
    x = 691,838.60

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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.