Home / 680,621.37-1,020,932.37-280,822.72

Finding the Fourth Proportional to 680,621.37, 1,020,932.37 and 280,822.72

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Solution

The fourth proportional to 680,621.37, 1,020,932.37 and 280,822.72 is: 421,234.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,621.37 : 1,020,932.37 = 280,822.72 : x
  2. Step 2: Convert to fraction form
    680,621.37/1,020,932.37 = 280,822.72/x
  3. Step 3: Cross multiply
    680,621.37x = 1,020,932.37 × 280,822.72
  4. Step 4: Simplify right side
    680,621.37x = 286,700,998,570.67
  5. Step 5: Solve for x
    x = 286,700,998,570.67/680,621.37
  6. Step 6: Final answer
    x = 421,234.20

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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.