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Finding the Third Proportional to 290,734,461 and 637,958,518.50

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Solution

The third proportional to 290,734,461 and 637,958,518.50 is: 1,399,872,137.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,734,461 : 637,958,518.50 = 637,958,518.50 : x
  2. Step 2: Convert to fraction form
    290,734,461/637,958,518.50 = 637,958,518.50/x
  3. Step 3: Cross multiply
    290,734,461x = 637,958,518.50 × 637,958,518.50
  4. Step 4: Simplify right side
    290,734,461x = 406,991,071,326,714,816
  5. Step 5: Solve for x
    x = 406,991,071,326,714,816/290,734,461
  6. Step 6: Final answer
    x = 1,399,872,137.37

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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.