Home / 689,619.37-1,034,418.65-310,272.21

Finding the Fourth Proportional to 689,619.37, 1,034,418.65 and 310,272.21

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Solution

The fourth proportional to 689,619.37, 1,034,418.65 and 310,272.21 is: 465,403.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,619.37 : 1,034,418.65 = 310,272.21 : x
  2. Step 2: Convert to fraction form
    689,619.37/1,034,418.65 = 310,272.21/x
  3. Step 3: Cross multiply
    689,619.37x = 1,034,418.65 × 310,272.21
  4. Step 4: Simplify right side
    689,619.37x = 320,951,360,600.72
  5. Step 5: Solve for x
    x = 320,951,360,600.72/689,619.37
  6. Step 6: Final answer
    x = 465,403.63

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1.5x scale

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.