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Finding the Third Proportional to 858,978 and 1,867,339.50

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Solution

The third proportional to 858,978 and 1,867,339.50 is: 4,059,425.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,978 : 1,867,339.50 = 1,867,339.50 : x
  2. Step 2: Convert to fraction form
    858,978/1,867,339.50 = 1,867,339.50/x
  3. Step 3: Cross multiply
    858,978x = 1,867,339.50 × 1,867,339.50
  4. Step 4: Simplify right side
    858,978x = 3,486,956,808,260.25
  5. Step 5: Solve for x
    x = 3,486,956,808,260.25/858,978
  6. Step 6: Final answer
    x = 4,059,425.05

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.