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Finding the Third Proportional to 290,734,455 and 637,958,505.75

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Solution

The third proportional to 290,734,455 and 637,958,505.75 is: 1,399,872,110.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,734,455 : 637,958,505.75 = 637,958,505.75 : x
  2. Step 2: Convert to fraction form
    290,734,455/637,958,505.75 = 637,958,505.75/x
  3. Step 3: Cross multiply
    290,734,455x = 637,958,505.75 × 637,958,505.75
  4. Step 4: Simplify right side
    290,734,455x = 406,991,055,058,772,800
  5. Step 5: Solve for x
    x = 406,991,055,058,772,800/290,734,455
  6. Step 6: Final answer
    x = 1,399,872,110.30

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.