Home / 486,678.51-671,609.21-271,821.56

Finding the Fourth Proportional to 486,678.51, 671,609.21 and 271,821.56

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Solution

The fourth proportional to 486,678.51, 671,609.21 and 271,821.56 is: 375,109.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,678.51 : 671,609.21 = 271,821.56 : x
  2. Step 2: Convert to fraction form
    486,678.51/671,609.21 = 271,821.56/x
  3. Step 3: Cross multiply
    486,678.51x = 671,609.21 × 271,821.56
  4. Step 4: Simplify right side
    486,678.51x = 182,557,858,455.41
  5. Step 5: Solve for x
    x = 182,557,858,455.41/486,678.51
  6. Step 6: Final answer
    x = 375,109.76

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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.