Home / 680,980.14-1,020,878.37-343,739.88

Finding the Fourth Proportional to 680,980.14, 1,020,878.37 and 343,739.88

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Solution

The fourth proportional to 680,980.14, 1,020,878.37 and 343,739.88 is: 515,311.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,980.14 : 1,020,878.37 = 343,739.88 : x
  2. Step 2: Convert to fraction form
    680,980.14/1,020,878.37 = 343,739.88/x
  3. Step 3: Cross multiply
    680,980.14x = 1,020,878.37 × 343,739.88
  4. Step 4: Simplify right side
    680,980.14x = 350,916,608,398.40
  5. Step 5: Solve for x
    x = 350,916,608,398.40/680,980.14
  6. Step 6: Final answer
    x = 515,311.08

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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.