Home / 821,971.23-1,233,079.55-253,305.06

Finding the Fourth Proportional to 821,971.23, 1,233,079.55 and 253,305.06

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Solution

The fourth proportional to 821,971.23, 1,233,079.55 and 253,305.06 is: 379,995.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,971.23 : 1,233,079.55 = 253,305.06 : x
  2. Step 2: Convert to fraction form
    821,971.23/1,233,079.55 = 253,305.06/x
  3. Step 3: Cross multiply
    821,971.23x = 1,233,079.55 × 253,305.06
  4. Step 4: Simplify right side
    821,971.23x = 312,345,289,397.52
  5. Step 5: Solve for x
    x = 312,345,289,397.52/821,971.23
  6. Step 6: Final answer
    x = 379,995.40

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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.