Home / 826,505.20-1,239,276.04-320,475

Finding the Fourth Proportional to 826,505.20, 1,239,276.04 and 320,475

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Solution

The fourth proportional to 826,505.20, 1,239,276.04 and 320,475 is: 480,525.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,505.20 : 1,239,276.04 = 320,475 : x
  2. Step 2: Convert to fraction form
    826,505.20/1,239,276.04 = 320,475/x
  3. Step 3: Cross multiply
    826,505.20x = 1,239,276.04 × 320,475
  4. Step 4: Simplify right side
    826,505.20x = 397,156,988,919
  5. Step 5: Solve for x
    x = 397,156,988,919/826,505.20
  6. Step 6: Final answer
    x = 480,525.70

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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.