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Finding the Third Proportional to 287,089.50 and 618,049.50

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Solution

The third proportional to 287,089.50 and 618,049.50 is: 1,330,543.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,089.50 : 618,049.50 = 618,049.50 : x
  2. Step 2: Convert to fraction form
    287,089.50/618,049.50 = 618,049.50/x
  3. Step 3: Cross multiply
    287,089.50x = 618,049.50 × 618,049.50
  4. Step 4: Simplify right side
    287,089.50x = 381,985,184,450.25
  5. Step 5: Solve for x
    x = 381,985,184,450.25/287,089.50
  6. Step 6: Final answer
    x = 1,330,543.91

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.