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Finding the Third Proportional to 578,365 and 864,145

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Solution

The third proportional to 578,365 and 864,145 is: 1,291,133.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,365 : 864,145 = 864,145 : x
  2. Step 2: Convert to fraction form
    578,365/864,145 = 864,145/x
  3. Step 3: Cross multiply
    578,365x = 864,145 × 864,145
  4. Step 4: Simplify right side
    578,365x = 746,746,581,025
  5. Step 5: Solve for x
    x = 746,746,581,025/578,365
  6. Step 6: Final answer
    x = 1,291,133.77

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.