Home / 880,930.20-1,321,913.70-320,021.40

Finding the Fourth Proportional to 880,930.20, 1,321,913.70 and 320,021.40

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Solution

The fourth proportional to 880,930.20, 1,321,913.70 and 320,021.40 is: 480,220.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,930.20 : 1,321,913.70 = 320,021.40 : x
  2. Step 2: Convert to fraction form
    880,930.20/1,321,913.70 = 320,021.40/x
  3. Step 3: Cross multiply
    880,930.20x = 1,321,913.70 × 320,021.40
  4. Step 4: Simplify right side
    880,930.20x = 423,040,672,953.18
  5. Step 5: Solve for x
    x = 423,040,672,953.18/880,930.20
  6. Step 6: Final answer
    x = 480,220.42

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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.