Home / 859,206.40-1,288,481.55-259,968.40

Finding the Fourth Proportional to 859,206.40, 1,288,481.55 and 259,968.40

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Solution

The fourth proportional to 859,206.40, 1,288,481.55 and 259,968.40 is: 389,853.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,206.40 : 1,288,481.55 = 259,968.40 : x
  2. Step 2: Convert to fraction form
    859,206.40/1,288,481.55 = 259,968.40/x
  3. Step 3: Cross multiply
    859,206.40x = 1,288,481.55 × 259,968.40
  4. Step 4: Simplify right side
    859,206.40x = 334,964,486,983.02
  5. Step 5: Solve for x
    x = 334,964,486,983.02/859,206.40
  6. Step 6: Final answer
    x = 389,853.34

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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.