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Finding the Third Proportional to 528,418.50 and 818,385

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Solution

The third proportional to 528,418.50 and 818,385 is: 1,267,468.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,418.50 : 818,385 = 818,385 : x
  2. Step 2: Convert to fraction form
    528,418.50/818,385 = 818,385/x
  3. Step 3: Cross multiply
    528,418.50x = 818,385 × 818,385
  4. Step 4: Simplify right side
    528,418.50x = 669,754,008,225
  5. Step 5: Solve for x
    x = 669,754,008,225/528,418.50
  6. Step 6: Final answer
    x = 1,267,468.89

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.