Home / 589,287.12-813,216.36-321,015.12

Finding the Fourth Proportional to 589,287.12, 813,216.36 and 321,015.12

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Solution

The fourth proportional to 589,287.12, 813,216.36 and 321,015.12 is: 443,000.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    589,287.12 : 813,216.36 = 321,015.12 : x
  2. Step 2: Convert to fraction form
    589,287.12/813,216.36 = 321,015.12/x
  3. Step 3: Cross multiply
    589,287.12x = 813,216.36 × 321,015.12
  4. Step 4: Simplify right side
    589,287.12x = 261,054,747,391.36
  5. Step 5: Solve for x
    x = 261,054,747,391.36/589,287.12
  6. Step 6: Final answer
    x = 443,000.94

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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.