Home / 943,785.68-1,302,708.84-642,154.64

Finding the Fourth Proportional to 943,785.68, 1,302,708.84 and 642,154.64

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Solution

The fourth proportional to 943,785.68, 1,302,708.84 and 642,154.64 is: 886,367.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    943,785.68 : 1,302,708.84 = 642,154.64 : x
  2. Step 2: Convert to fraction form
    943,785.68/1,302,708.84 = 642,154.64/x
  3. Step 3: Cross multiply
    943,785.68x = 1,302,708.84 × 642,154.64
  4. Step 4: Simplify right side
    943,785.68x = 836,540,526,175.02
  5. Step 5: Solve for x
    x = 836,540,526,175.02/943,785.68
  6. Step 6: Final answer
    x = 886,367.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.