Home / 821,268.48-1,231,946.88-260,346.72

Finding the Fourth Proportional to 821,268.48, 1,231,946.88 and 260,346.72

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Solution

The fourth proportional to 821,268.48, 1,231,946.88 and 260,346.72 is: 390,534.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,268.48 : 1,231,946.88 = 260,346.72 : x
  2. Step 2: Convert to fraction form
    821,268.48/1,231,946.88 = 260,346.72/x
  3. Step 3: Cross multiply
    821,268.48x = 1,231,946.88 × 260,346.72
  4. Step 4: Simplify right side
    821,268.48x = 320,733,329,422.23
  5. Step 5: Solve for x
    x = 320,733,329,422.23/821,268.48
  6. Step 6: Final answer
    x = 390,534.08

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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.