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Finding the Third Proportional to 345,016.13 and 528,639.75

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Solution

The third proportional to 345,016.13 and 528,639.75 is: 809,991.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,016.13 : 528,639.75 = 528,639.75 : x
  2. Step 2: Convert to fraction form
    345,016.13/528,639.75 = 528,639.75/x
  3. Step 3: Cross multiply
    345,016.13x = 528,639.75 × 528,639.75
  4. Step 4: Simplify right side
    345,016.13x = 279,459,985,280.06
  5. Step 5: Solve for x
    x = 279,459,985,280.06/345,016.13
  6. Step 6: Final answer
    x = 809,991.08

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.