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Finding the Third Proportional to 286,312 and 646,858

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Solution

The third proportional to 286,312 and 646,858 is: 1,461,431.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,312 : 646,858 = 646,858 : x
  2. Step 2: Convert to fraction form
    286,312/646,858 = 646,858/x
  3. Step 3: Cross multiply
    286,312x = 646,858 × 646,858
  4. Step 4: Simplify right side
    286,312x = 418,425,272,164
  5. Step 5: Solve for x
    x = 418,425,272,164/286,312
  6. Step 6: Final answer
    x = 1,461,431.14

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Why These Related Problems?

These problems maintain the same ratio (2.26) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.