Home / 859,885.20-1,289,827.80-260,817.30

Finding the Fourth Proportional to 859,885.20, 1,289,827.80 and 260,817.30

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Solution

The fourth proportional to 859,885.20, 1,289,827.80 and 260,817.30 is: 391,225.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,885.20 : 1,289,827.80 = 260,817.30 : x
  2. Step 2: Convert to fraction form
    859,885.20/1,289,827.80 = 260,817.30/x
  3. Step 3: Cross multiply
    859,885.20x = 1,289,827.80 × 260,817.30
  4. Step 4: Simplify right side
    859,885.20x = 336,409,404,260.94
  5. Step 5: Solve for x
    x = 336,409,404,260.94/859,885.20
  6. Step 6: Final answer
    x = 391,225.95

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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.