Home / 821,173.90-1,231,290.51-252,407.02

Finding the Fourth Proportional to 821,173.90, 1,231,290.51 and 252,407.02

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Solution

The fourth proportional to 821,173.90, 1,231,290.51 and 252,407.02 is: 378,465.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,173.90 : 1,231,290.51 = 252,407.02 : x
  2. Step 2: Convert to fraction form
    821,173.90/1,231,290.51 = 252,407.02/x
  3. Step 3: Cross multiply
    821,173.90x = 1,231,290.51 × 252,407.02
  4. Step 4: Simplify right side
    821,173.90x = 310,786,368,383.38
  5. Step 5: Solve for x
    x = 310,786,368,383.38/821,173.90
  6. Step 6: Final answer
    x = 378,465.96

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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.