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Finding the Fourth Proportional to 680,884.76, 1,020,800.82 and 343,751.88

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Solution

The fourth proportional to 680,884.76, 1,020,800.82 and 343,751.88 is: 515,362.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,884.76 : 1,020,800.82 = 343,751.88 : x
  2. Step 2: Convert to fraction form
    680,884.76/1,020,800.82 = 343,751.88/x
  3. Step 3: Cross multiply
    680,884.76x = 1,020,800.82 × 343,751.88
  4. Step 4: Simplify right side
    680,884.76x = 350,902,200,980.54
  5. Step 5: Solve for x
    x = 350,902,200,980.54/680,884.76
  6. Step 6: Final answer
    x = 515,362.10

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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.