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Finding the Third Proportional to 290,904.75 and 617,023.50

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Solution

The third proportional to 290,904.75 and 617,023.50 is: 1,308,737.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,904.75 : 617,023.50 = 617,023.50 : x
  2. Step 2: Convert to fraction form
    290,904.75/617,023.50 = 617,023.50/x
  3. Step 3: Cross multiply
    290,904.75x = 617,023.50 × 617,023.50
  4. Step 4: Simplify right side
    290,904.75x = 380,717,999,552.25
  5. Step 5: Solve for x
    x = 380,717,999,552.25/290,904.75
  6. Step 6: Final answer
    x = 1,308,737.65

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.