Home / 485,060.81-669,661.38-321,938.53

Finding the Fourth Proportional to 485,060.81, 669,661.38 and 321,938.53

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Solution

The fourth proportional to 485,060.81, 669,661.38 and 321,938.53 is: 444,459.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,060.81 : 669,661.38 = 321,938.53 : x
  2. Step 2: Convert to fraction form
    485,060.81/669,661.38 = 321,938.53/x
  3. Step 3: Cross multiply
    485,060.81x = 669,661.38 × 321,938.53
  4. Step 4: Simplify right side
    485,060.81x = 215,589,801,181.46
  5. Step 5: Solve for x
    x = 215,589,801,181.46/485,060.81
  6. Step 6: Final answer
    x = 444,459.32

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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.