Home / 821,627.30-1,233,455.88-389,757.72

Finding the Fourth Proportional to 821,627.30, 1,233,455.88 and 389,757.72

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Solution

The fourth proportional to 821,627.30, 1,233,455.88 and 389,757.72 is: 585,118.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,627.30 : 1,233,455.88 = 389,757.72 : x
  2. Step 2: Convert to fraction form
    821,627.30/1,233,455.88 = 389,757.72/x
  3. Step 3: Cross multiply
    821,627.30x = 1,233,455.88 × 389,757.72
  4. Step 4: Simplify right side
    821,627.30x = 480,748,951,509.39
  5. Step 5: Solve for x
    x = 480,748,951,509.39/821,627.30
  6. Step 6: Final answer
    x = 585,118.04

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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.