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Finding the Third Proportional to 286,863 and 623,478

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Solution

The third proportional to 286,863 and 623,478 is: 1,355,088.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,863 : 623,478 = 623,478 : x
  2. Step 2: Convert to fraction form
    286,863/623,478 = 623,478/x
  3. Step 3: Cross multiply
    286,863x = 623,478 × 623,478
  4. Step 4: Simplify right side
    286,863x = 388,724,816,484
  5. Step 5: Solve for x
    x = 388,724,816,484/286,863
  6. Step 6: Final answer
    x = 1,355,088.72

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.