Home / 680,107.35-1,020,285.57-280,530.15

Finding the Fourth Proportional to 680,107.35, 1,020,285.57 and 280,530.15

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Solution

The fourth proportional to 680,107.35, 1,020,285.57 and 280,530.15 is: 420,846.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,107.35 : 1,020,285.57 = 280,530.15 : x
  2. Step 2: Convert to fraction form
    680,107.35/1,020,285.57 = 280,530.15/x
  3. Step 3: Cross multiply
    680,107.35x = 1,020,285.57 × 280,530.15
  4. Step 4: Simplify right side
    680,107.35x = 286,220,863,994.94
  5. Step 5: Solve for x
    x = 286,220,863,994.94/680,107.35
  6. Step 6: Final answer
    x = 420,846.60

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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.