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Finding the Fourth Proportional to 571,747.22, 788,992.86 and 313,620.50

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Solution

The fourth proportional to 571,747.22, 788,992.86 and 313,620.50 is: 432,786.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,747.22 : 788,992.86 = 313,620.50 : x
  2. Step 2: Convert to fraction form
    571,747.22/788,992.86 = 313,620.50/x
  3. Step 3: Cross multiply
    571,747.22x = 788,992.86 × 313,620.50
  4. Step 4: Simplify right side
    571,747.22x = 247,444,335,249.63
  5. Step 5: Solve for x
    x = 247,444,335,249.63/571,747.22
  6. Step 6: Final answer
    x = 432,786.25

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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.