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Finding the Fourth Proportional to 560,486.40, 773,456.64 and 305,840.64

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Solution

The fourth proportional to 560,486.40, 773,456.64 and 305,840.64 is: 422,052.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,486.40 : 773,456.64 = 305,840.64 : x
  2. Step 2: Convert to fraction form
    560,486.40/773,456.64 = 305,840.64/x
  3. Step 3: Cross multiply
    560,486.40x = 773,456.64 × 305,840.64
  4. Step 4: Simplify right side
    560,486.40x = 236,554,473,789.85
  5. Step 5: Solve for x
    x = 236,554,473,789.85/560,486.40
  6. Step 6: Final answer
    x = 422,052.12

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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.