Home / 628,720.68-943,148.18-268,928.76

Finding the Fourth Proportional to 628,720.68, 943,148.18 and 268,928.76

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Solution

The fourth proportional to 628,720.68, 943,148.18 and 268,928.76 is: 403,421.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,720.68 : 943,148.18 = 268,928.76 : x
  2. Step 2: Convert to fraction form
    628,720.68/943,148.18 = 268,928.76/x
  3. Step 3: Cross multiply
    628,720.68x = 943,148.18 × 268,928.76
  4. Step 4: Simplify right side
    628,720.68x = 253,639,670,543.66
  5. Step 5: Solve for x
    x = 253,639,670,543.66/628,720.68
  6. Step 6: Final answer
    x = 403,421.87

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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.