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Finding the Third Proportional to 1,670,421 and 2,605,459

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Solution

The third proportional to 1,670,421 and 2,605,459 is: 4,063,895.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,670,421 : 2,605,459 = 2,605,459 : x
  2. Step 2: Convert to fraction form
    1,670,421/2,605,459 = 2,605,459/x
  3. Step 3: Cross multiply
    1,670,421x = 2,605,459 × 2,605,459
  4. Step 4: Simplify right side
    1,670,421x = 6,788,416,600,681
  5. Step 5: Solve for x
    x = 6,788,416,600,681/1,670,421
  6. Step 6: Final answer
    x = 4,063,895.63

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.