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Finding the Third Proportional to 358,810 and 555,579

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Solution

The third proportional to 358,810 and 555,579 is: 860,254.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,810 : 555,579 = 555,579 : x
  2. Step 2: Convert to fraction form
    358,810/555,579 = 555,579/x
  3. Step 3: Cross multiply
    358,810x = 555,579 × 555,579
  4. Step 4: Simplify right side
    358,810x = 308,668,025,241
  5. Step 5: Solve for x
    x = 308,668,025,241/358,810
  6. Step 6: Final answer
    x = 860,254.80

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.