Home / 628,720.43-943,147.80-268,928.51

Finding the Fourth Proportional to 628,720.43, 943,147.80 and 268,928.51

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Solution

The fourth proportional to 628,720.43, 943,147.80 and 268,928.51 is: 403,421.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,720.43 : 943,147.80 = 268,928.51 : x
  2. Step 2: Convert to fraction form
    628,720.43/943,147.80 = 268,928.51/x
  3. Step 3: Cross multiply
    628,720.43x = 943,147.80 × 268,928.51
  4. Step 4: Simplify right side
    628,720.43x = 253,639,327,848.04
  5. Step 5: Solve for x
    x = 253,639,327,848.04/628,720.43
  6. Step 6: Final answer
    x = 403,421.48

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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.