Home / 486,986.39-672,028.69-272,128.22

Finding the Fourth Proportional to 486,986.39, 672,028.69 and 272,128.22

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Solution

The fourth proportional to 486,986.39, 672,028.69 and 272,128.22 is: 375,529.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,986.39 : 672,028.69 = 272,128.22 : x
  2. Step 2: Convert to fraction form
    486,986.39/672,028.69 = 272,128.22/x
  3. Step 3: Cross multiply
    486,986.39x = 672,028.69 × 272,128.22
  4. Step 4: Simplify right side
    486,986.39x = 182,877,971,198.63
  5. Step 5: Solve for x
    x = 182,877,971,198.63/486,986.39
  6. Step 6: Final answer
    x = 375,529.94

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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.