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Finding the Third Proportional to 354,905 and 774,038

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Solution

The third proportional to 354,905 and 774,038 is: 1,688,155.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,905 : 774,038 = 774,038 : x
  2. Step 2: Convert to fraction form
    354,905/774,038 = 774,038/x
  3. Step 3: Cross multiply
    354,905x = 774,038 × 774,038
  4. Step 4: Simplify right side
    354,905x = 599,134,825,444
  5. Step 5: Solve for x
    x = 599,134,825,444/354,905
  6. Step 6: Final answer
    x = 1,688,155.49

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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.