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Finding the Fourth Proportional to 875,729.16, 1,208,481.48 and 488,556

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Solution

The fourth proportional to 875,729.16, 1,208,481.48 and 488,556 is: 674,193.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,729.16 : 1,208,481.48 = 488,556 : x
  2. Step 2: Convert to fraction form
    875,729.16/1,208,481.48 = 488,556/x
  3. Step 3: Cross multiply
    875,729.16x = 1,208,481.48 × 488,556
  4. Step 4: Simplify right side
    875,729.16x = 590,410,877,942.88
  5. Step 5: Solve for x
    x = 590,410,877,942.88/875,729.16
  6. Step 6: Final answer
    x = 674,193.47

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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.