Home / 1,390,221.12-2,085,295.20-443,649.60

Finding the Fourth Proportional to 1,390,221.12, 2,085,295.20 and 443,649.60

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Solution

The fourth proportional to 1,390,221.12, 2,085,295.20 and 443,649.60 is: 665,462.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,221.12 : 2,085,295.20 = 443,649.60 : x
  2. Step 2: Convert to fraction form
    1,390,221.12/2,085,295.20 = 443,649.60/x
  3. Step 3: Cross multiply
    1,390,221.12x = 2,085,295.20 × 443,649.60
  4. Step 4: Simplify right side
    1,390,221.12x = 925,140,381,361.92
  5. Step 5: Solve for x
    x = 925,140,381,361.92/1,390,221.12
  6. Step 6: Final answer
    x = 665,462.76

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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.