Home / 691,145.08-1,036,716.71-321,393.77

Finding the Fourth Proportional to 691,145.08, 1,036,716.71 and 321,393.77

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Solution

The fourth proportional to 691,145.08, 1,036,716.71 and 321,393.77 is: 482,090.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,145.08 : 1,036,716.71 = 321,393.77 : x
  2. Step 2: Convert to fraction form
    691,145.08/1,036,716.71 = 321,393.77/x
  3. Step 3: Cross multiply
    691,145.08x = 1,036,716.71 × 321,393.77
  4. Step 4: Simplify right side
    691,145.08x = 333,194,296,133.46
  5. Step 5: Solve for x
    x = 333,194,296,133.46/691,145.08
  6. Step 6: Final answer
    x = 482,090.24

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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.