Home / 921,419.13-1,382,325.54-322,399.83

Finding the Fourth Proportional to 921,419.13, 1,382,325.54 and 322,399.83

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Solution

The fourth proportional to 921,419.13, 1,382,325.54 and 322,399.83 is: 483,668.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,419.13 : 1,382,325.54 = 322,399.83 : x
  2. Step 2: Convert to fraction form
    921,419.13/1,382,325.54 = 322,399.83/x
  3. Step 3: Cross multiply
    921,419.13x = 1,382,325.54 × 322,399.83
  4. Step 4: Simplify right side
    921,419.13x = 445,661,519,100.66
  5. Step 5: Solve for x
    x = 445,661,519,100.66/921,419.13
  6. Step 6: Final answer
    x = 483,668.62

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1.5x scale

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.