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Finding the Third Proportional to 315,089 and 472,864

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Solution

The third proportional to 315,089 and 472,864 is: 709,641.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,089 : 472,864 = 472,864 : x
  2. Step 2: Convert to fraction form
    315,089/472,864 = 472,864/x
  3. Step 3: Cross multiply
    315,089x = 472,864 × 472,864
  4. Step 4: Simplify right side
    315,089x = 223,600,362,496
  5. Step 5: Solve for x
    x = 223,600,362,496/315,089
  6. Step 6: Final answer
    x = 709,641.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.