Home / 671,739.09-1,007,931.21-418,954.68

Finding the Fourth Proportional to 671,739.09, 1,007,931.21 and 418,954.68

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Solution

The fourth proportional to 671,739.09, 1,007,931.21 and 418,954.68 is: 628,633.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,739.09 : 1,007,931.21 = 418,954.68 : x
  2. Step 2: Convert to fraction form
    671,739.09/1,007,931.21 = 418,954.68/x
  3. Step 3: Cross multiply
    671,739.09x = 1,007,931.21 × 418,954.68
  4. Step 4: Simplify right side
    671,739.09x = 422,277,497,547.56
  5. Step 5: Solve for x
    x = 422,277,497,547.56/671,739.09
  6. Step 6: Final answer
    x = 628,633.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.