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Finding the Fourth Proportional to 555,028.05, 765,941.02 and 300,379.22

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Solution

The fourth proportional to 555,028.05, 765,941.02 and 300,379.22 is: 414,524.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,028.05 : 765,941.02 = 300,379.22 : x
  2. Step 2: Convert to fraction form
    555,028.05/765,941.02 = 300,379.22/x
  3. Step 3: Cross multiply
    555,028.05x = 765,941.02 × 300,379.22
  4. Step 4: Simplify right side
    555,028.05x = 230,072,761,572.95
  5. Step 5: Solve for x
    x = 230,072,761,572.95/555,028.05
  6. Step 6: Final answer
    x = 414,524.57

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1.5x scale

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.