Home / 821,266.80-1,231,943.64-260,345.04

Finding the Fourth Proportional to 821,266.80, 1,231,943.64 and 260,345.04

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Solution

The fourth proportional to 821,266.80, 1,231,943.64 and 260,345.04 is: 390,531.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,266.80 : 1,231,943.64 = 260,345.04 : x
  2. Step 2: Convert to fraction form
    821,266.80/1,231,943.64 = 260,345.04/x
  3. Step 3: Cross multiply
    821,266.80x = 1,231,943.64 × 260,345.04
  4. Step 4: Simplify right side
    821,266.80x = 320,730,416,233.55
  5. Step 5: Solve for x
    x = 320,730,416,233.55/821,266.80
  6. Step 6: Final answer
    x = 390,531.33

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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.