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Finding the Fourth Proportional to 555,425.88, 766,486.62 and 300,776.28

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Solution

The fourth proportional to 555,425.88, 766,486.62 and 300,776.28 is: 415,070.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,425.88 : 766,486.62 = 300,776.28 : x
  2. Step 2: Convert to fraction form
    555,425.88/766,486.62 = 300,776.28/x
  3. Step 3: Cross multiply
    555,425.88x = 766,486.62 × 300,776.28
  4. Step 4: Simplify right side
    555,425.88x = 230,540,994,233.37
  5. Step 5: Solve for x
    x = 230,540,994,233.37/555,425.88
  6. Step 6: Final answer
    x = 415,070.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.