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Finding the Third Proportional to 515,068.88 and 787,917.38

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Solution

The third proportional to 515,068.88 and 787,917.38 is: 1,205,302.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,068.88 : 787,917.38 = 787,917.38 : x
  2. Step 2: Convert to fraction form
    515,068.88/787,917.38 = 787,917.38/x
  3. Step 3: Cross multiply
    515,068.88x = 787,917.38 × 787,917.38
  4. Step 4: Simplify right side
    515,068.88x = 620,813,789,826.89
  5. Step 5: Solve for x
    x = 620,813,789,826.89/515,068.88
  6. Step 6: Final answer
    x = 1,205,302.47

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.