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Finding the Fourth Proportional to 521,326.82, 719,369.48 and 300,561.63

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Solution

The fourth proportional to 521,326.82, 719,369.48 and 300,561.63 is: 414,739.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,326.82 : 719,369.48 = 300,561.63 : x
  2. Step 2: Convert to fraction form
    521,326.82/719,369.48 = 300,561.63/x
  3. Step 3: Cross multiply
    521,326.82x = 719,369.48 × 300,561.63
  4. Step 4: Simplify right side
    521,326.82x = 216,214,863,481.05
  5. Step 5: Solve for x
    x = 216,214,863,481.05/521,326.82
  6. Step 6: Final answer
    x = 414,739.57

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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.