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Finding the Third Proportional to 289,407 and 445,045.50

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Solution

The third proportional to 289,407 and 445,045.50 is: 684,383.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,407 : 445,045.50 = 445,045.50 : x
  2. Step 2: Convert to fraction form
    289,407/445,045.50 = 445,045.50/x
  3. Step 3: Cross multiply
    289,407x = 445,045.50 × 445,045.50
  4. Step 4: Simplify right side
    289,407x = 198,065,497,070.25
  5. Step 5: Solve for x
    x = 198,065,497,070.25/289,407
  6. Step 6: Final answer
    x = 684,383.92

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.