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Finding the Third Proportional to 385,636 and 830,484

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Solution

The third proportional to 385,636 and 830,484 is: 1,788,483.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,636 : 830,484 = 830,484 : x
  2. Step 2: Convert to fraction form
    385,636/830,484 = 830,484/x
  3. Step 3: Cross multiply
    385,636x = 830,484 × 830,484
  4. Step 4: Simplify right side
    385,636x = 689,703,674,256
  5. Step 5: Solve for x
    x = 689,703,674,256/385,636
  6. Step 6: Final answer
    x = 1,788,483.63

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.