Home / 811,158.44-1,216,909-305,708.72

Finding the Fourth Proportional to 811,158.44, 1,216,909 and 305,708.72

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Solution

The fourth proportional to 811,158.44, 1,216,909 and 305,708.72 is: 458,627.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,158.44 : 1,216,909 = 305,708.72 : x
  2. Step 2: Convert to fraction form
    811,158.44/1,216,909 = 305,708.72/x
  3. Step 3: Cross multiply
    811,158.44x = 1,216,909 × 305,708.72
  4. Step 4: Simplify right side
    811,158.44x = 372,019,692,746.48
  5. Step 5: Solve for x
    x = 372,019,692,746.48/811,158.44
  6. Step 6: Final answer
    x = 458,627.65

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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.