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Finding the Third Proportional to 314,411.63 and 678,638.25

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Solution

The third proportional to 314,411.63 and 678,638.25 is: 1,464,799.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,411.63 : 678,638.25 = 678,638.25 : x
  2. Step 2: Convert to fraction form
    314,411.63/678,638.25 = 678,638.25/x
  3. Step 3: Cross multiply
    314,411.63x = 678,638.25 × 678,638.25
  4. Step 4: Simplify right side
    314,411.63x = 460,549,874,363.06
  5. Step 5: Solve for x
    x = 460,549,874,363.06/314,411.63
  6. Step 6: Final answer
    x = 1,464,799.13

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.