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Finding the Third Proportional to 478,750 and 728,072

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Solution

The third proportional to 478,750 and 728,072 is: 1,107,235.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,750 : 728,072 = 728,072 : x
  2. Step 2: Convert to fraction form
    478,750/728,072 = 728,072/x
  3. Step 3: Cross multiply
    478,750x = 728,072 × 728,072
  4. Step 4: Simplify right side
    478,750x = 530,088,837,184
  5. Step 5: Solve for x
    x = 530,088,837,184/478,750
  6. Step 6: Final answer
    x = 1,107,235.17

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.