Home / 990,844.68-1,485,886.72-421,865.04

Finding the Fourth Proportional to 990,844.68, 1,485,886.72 and 421,865.04

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Solution

The fourth proportional to 990,844.68, 1,485,886.72 and 421,865.04 is: 632,635.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,844.68 : 1,485,886.72 = 421,865.04 : x
  2. Step 2: Convert to fraction form
    990,844.68/1,485,886.72 = 421,865.04/x
  3. Step 3: Cross multiply
    990,844.68x = 1,485,886.72 × 421,865.04
  4. Step 4: Simplify right side
    990,844.68x = 626,843,660,568.27
  5. Step 5: Solve for x
    x = 626,843,660,568.27/990,844.68
  6. Step 6: Final answer
    x = 632,635.64

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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.