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Finding the Third Proportional to 690,135.19 and 1,505,749.50

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Solution

The third proportional to 690,135.19 and 1,505,749.50 is: 3,285,271.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,135.19 : 1,505,749.50 = 1,505,749.50 : x
  2. Step 2: Convert to fraction form
    690,135.19/1,505,749.50 = 1,505,749.50/x
  3. Step 3: Cross multiply
    690,135.19x = 1,505,749.50 × 1,505,749.50
  4. Step 4: Simplify right side
    690,135.19x = 2,267,281,556,750.25
  5. Step 5: Solve for x
    x = 2,267,281,556,750.25/690,135.19
  6. Step 6: Final answer
    x = 3,285,271.64

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.