Home / 765,286.60-1,148,051.40-259,895.20

Finding the Fourth Proportional to 765,286.60, 1,148,051.40 and 259,895.20

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Solution

The fourth proportional to 765,286.60, 1,148,051.40 and 259,895.20 is: 389,884.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,286.60 : 1,148,051.40 = 259,895.20 : x
  2. Step 2: Convert to fraction form
    765,286.60/1,148,051.40 = 259,895.20/x
  3. Step 3: Cross multiply
    765,286.60x = 1,148,051.40 × 259,895.20
  4. Step 4: Simplify right side
    765,286.60x = 298,373,048,213.28
  5. Step 5: Solve for x
    x = 298,373,048,213.28/765,286.60
  6. Step 6: Final answer
    x = 389,884.06

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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.