Home / 881,029.20-1,321,889.40-320,120.40

Finding the Fourth Proportional to 881,029.20, 1,321,889.40 and 320,120.40

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Solution

The fourth proportional to 881,029.20, 1,321,889.40 and 320,120.40 is: 480,306.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,029.20 : 1,321,889.40 = 320,120.40 : x
  2. Step 2: Convert to fraction form
    881,029.20/1,321,889.40 = 320,120.40/x
  3. Step 3: Cross multiply
    881,029.20x = 1,321,889.40 × 320,120.40
  4. Step 4: Simplify right side
    881,029.20x = 423,163,763,483.76
  5. Step 5: Solve for x
    x = 423,163,763,483.76/881,029.20
  6. Step 6: Final answer
    x = 480,306.17

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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.