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Finding the Third Proportional to 359,040 and 555,918

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Solution

The third proportional to 359,040 and 555,918 is: 860,753.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,040 : 555,918 = 555,918 : x
  2. Step 2: Convert to fraction form
    359,040/555,918 = 555,918/x
  3. Step 3: Cross multiply
    359,040x = 555,918 × 555,918
  4. Step 4: Simplify right side
    359,040x = 309,044,822,724
  5. Step 5: Solve for x
    x = 309,044,822,724/359,040
  6. Step 6: Final answer
    x = 860,753.18

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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.