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Finding the Third Proportional to 212,811,408 and 458,440,935

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Solution

The third proportional to 212,811,408 and 458,440,935 is: 987,579,062.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,811,408 : 458,440,935 = 458,440,935 : x
  2. Step 2: Convert to fraction form
    212,811,408/458,440,935 = 458,440,935/x
  3. Step 3: Cross multiply
    212,811,408x = 458,440,935 × 458,440,935
  4. Step 4: Simplify right side
    212,811,408x = 210,168,090,883,674,240
  5. Step 5: Solve for x
    x = 210,168,090,883,674,240/212,811,408
  6. Step 6: Final answer
    x = 987,579,062.88

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.