Home / 859,102.90-1,288,326.30-259,864.90

Finding the Fourth Proportional to 859,102.90, 1,288,326.30 and 259,864.90

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Solution

The fourth proportional to 859,102.90, 1,288,326.30 and 259,864.90 is: 389,698.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,102.90 : 1,288,326.30 = 259,864.90 : x
  2. Step 2: Convert to fraction form
    859,102.90/1,288,326.30 = 259,864.90/x
  3. Step 3: Cross multiply
    859,102.90x = 1,288,326.30 × 259,864.90
  4. Step 4: Simplify right side
    859,102.90x = 334,790,785,116.87
  5. Step 5: Solve for x
    x = 334,790,785,116.87/859,102.90
  6. Step 6: Final answer
    x = 389,698.12

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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.