Home / 847,407.68-1,271,111.10-216,321.28

Finding the Fourth Proportional to 847,407.68, 1,271,111.10 and 216,321.28

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Solution

The fourth proportional to 847,407.68, 1,271,111.10 and 216,321.28 is: 324,481.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,407.68 : 1,271,111.10 = 216,321.28 : x
  2. Step 2: Convert to fraction form
    847,407.68/1,271,111.10 = 216,321.28/x
  3. Step 3: Cross multiply
    847,407.68x = 1,271,111.10 × 216,321.28
  4. Step 4: Simplify right side
    847,407.68x = 274,968,380,174.21
  5. Step 5: Solve for x
    x = 274,968,380,174.21/847,407.68
  6. Step 6: Final answer
    x = 324,481.81

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Double scale
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Similar ratio
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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.