Home / 1,021,170.40-1,531,813.20-311,221.60

Finding the Fourth Proportional to 1,021,170.40, 1,531,813.20 and 311,221.60

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Solution

The fourth proportional to 1,021,170.40, 1,531,813.20 and 311,221.60 is: 466,849.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,170.40 : 1,531,813.20 = 311,221.60 : x
  2. Step 2: Convert to fraction form
    1,021,170.40/1,531,813.20 = 311,221.60/x
  3. Step 3: Cross multiply
    1,021,170.40x = 1,531,813.20 × 311,221.60
  4. Step 4: Simplify right side
    1,021,170.40x = 476,733,355,005.12
  5. Step 5: Solve for x
    x = 476,733,355,005.12/1,021,170.40
  6. Step 6: Final answer
    x = 466,849.95

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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.