Home / 689,880.44-1,034,820.92-310,357.86

Finding the Fourth Proportional to 689,880.44, 1,034,820.92 and 310,357.86

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Solution

The fourth proportional to 689,880.44, 1,034,820.92 and 310,357.86 is: 465,536.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,880.44 : 1,034,820.92 = 310,357.86 : x
  2. Step 2: Convert to fraction form
    689,880.44/1,034,820.92 = 310,357.86/x
  3. Step 3: Cross multiply
    689,880.44x = 1,034,820.92 × 310,357.86
  4. Step 4: Simplify right side
    689,880.44x = 321,164,806,214.43
  5. Step 5: Solve for x
    x = 321,164,806,214.43/689,880.44
  6. Step 6: Final answer
    x = 465,536.91

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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.