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Finding the Fourth Proportional to 486,534.69, 671,417.64 and 271,674.63

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Solution

The fourth proportional to 486,534.69, 671,417.64 and 271,674.63 is: 374,910.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,534.69 : 671,417.64 = 271,674.63 : x
  2. Step 2: Convert to fraction form
    486,534.69/671,417.64 = 271,674.63/x
  3. Step 3: Cross multiply
    486,534.69x = 671,417.64 × 271,674.63
  4. Step 4: Simplify right side
    486,534.69x = 182,407,138,922.47
  5. Step 5: Solve for x
    x = 182,407,138,922.47/486,534.69
  6. Step 6: Final answer
    x = 374,910.86

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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.