Home / 726,583.58-1,090,120.37-321,720.51

Finding the Fourth Proportional to 726,583.58, 1,090,120.37 and 321,720.51

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Solution

The fourth proportional to 726,583.58, 1,090,120.37 and 321,720.51 is: 482,689.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,583.58 : 1,090,120.37 = 321,720.51 : x
  2. Step 2: Convert to fraction form
    726,583.58/1,090,120.37 = 321,720.51/x
  3. Step 3: Cross multiply
    726,583.58x = 1,090,120.37 × 321,720.51
  4. Step 4: Simplify right side
    726,583.58x = 350,714,081,397.79
  5. Step 5: Solve for x
    x = 350,714,081,397.79/726,583.58
  6. Step 6: Final answer
    x = 482,689.25

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Double scale
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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.