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Finding the Third Proportional to 290,734,459 and 637,958,515

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Solution

The third proportional to 290,734,459 and 637,958,515 is: 1,399,872,131.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,734,459 : 637,958,515 = 637,958,515 : x
  2. Step 2: Convert to fraction form
    290,734,459/637,958,515 = 637,958,515/x
  3. Step 3: Cross multiply
    290,734,459x = 637,958,515 × 637,958,515
  4. Step 4: Simplify right side
    290,734,459x = 406,991,066,861,005,248
  5. Step 5: Solve for x
    x = 406,991,066,861,005,248/290,734,459
  6. Step 6: Final answer
    x = 1,399,872,131.64

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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.