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Finding the Third Proportional to 391,554 and 845,316

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Solution

The third proportional to 391,554 and 845,316 is: 1,824,931.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,554 : 845,316 = 845,316 : x
  2. Step 2: Convert to fraction form
    391,554/845,316 = 845,316/x
  3. Step 3: Cross multiply
    391,554x = 845,316 × 845,316
  4. Step 4: Simplify right side
    391,554x = 714,559,139,856
  5. Step 5: Solve for x
    x = 714,559,139,856/391,554
  6. Step 6: Final answer
    x = 1,824,931.27

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.