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Finding the Third Proportional to 290,889,258 and 627,928,590

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Solution

The third proportional to 290,889,258 and 627,928,590 is: 1,355,479,115.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,889,258 : 627,928,590 = 627,928,590 : x
  2. Step 2: Convert to fraction form
    290,889,258/627,928,590 = 627,928,590/x
  3. Step 3: Cross multiply
    290,889,258x = 627,928,590 × 627,928,590
  4. Step 4: Simplify right side
    290,889,258x = 394,294,314,139,388,096
  5. Step 5: Solve for x
    x = 394,294,314,139,388,096/290,889,258
  6. Step 6: Final answer
    x = 1,355,479,115.49

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.