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Finding the Third Proportional to 918,315 and 1,999,272

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Solution

The third proportional to 918,315 and 1,999,272 is: 4,352,633.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,315 : 1,999,272 = 1,999,272 : x
  2. Step 2: Convert to fraction form
    918,315/1,999,272 = 1,999,272/x
  3. Step 3: Cross multiply
    918,315x = 1,999,272 × 1,999,272
  4. Step 4: Simplify right side
    918,315x = 3,997,088,529,984
  5. Step 5: Solve for x
    x = 3,997,088,529,984/918,315
  6. Step 6: Final answer
    x = 4,352,633.39

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.