Home / 826,485.19-1,239,246.09-320,455

Finding the Fourth Proportional to 826,485.19, 1,239,246.09 and 320,455

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Solution

The fourth proportional to 826,485.19, 1,239,246.09 and 320,455 is: 480,495.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,485.19 : 1,239,246.09 = 320,455 : x
  2. Step 2: Convert to fraction form
    826,485.19/1,239,246.09 = 320,455/x
  3. Step 3: Cross multiply
    826,485.19x = 1,239,246.09 × 320,455
  4. Step 4: Simplify right side
    826,485.19x = 397,122,605,770.95
  5. Step 5: Solve for x
    x = 397,122,605,770.95/826,485.19
  6. Step 6: Final answer
    x = 480,495.73

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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.