Home / 680,618.40-1,020,927.94-280,819.76

Finding the Fourth Proportional to 680,618.40, 1,020,927.94 and 280,819.76

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Solution

The fourth proportional to 680,618.40, 1,020,927.94 and 280,819.76 is: 421,229.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,618.40 : 1,020,927.94 = 280,819.76 : x
  2. Step 2: Convert to fraction form
    680,618.40/1,020,927.94 = 280,819.76/x
  3. Step 3: Cross multiply
    680,618.40x = 1,020,927.94 × 280,819.76
  4. Step 4: Simplify right side
    680,618.40x = 286,696,739,088.09
  5. Step 5: Solve for x
    x = 286,696,739,088.09/680,618.40
  6. Step 6: Final answer
    x = 421,229.78

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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.