Home / 825,865.40-1,238,490.90-327,126.20

Finding the Fourth Proportional to 825,865.40, 1,238,490.90 and 327,126.20

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Solution

The fourth proportional to 825,865.40, 1,238,490.90 and 327,126.20 is: 490,567.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,865.40 : 1,238,490.90 = 327,126.20 : x
  2. Step 2: Convert to fraction form
    825,865.40/1,238,490.90 = 327,126.20/x
  3. Step 3: Cross multiply
    825,865.40x = 1,238,490.90 × 327,126.20
  4. Step 4: Simplify right side
    825,865.40x = 405,142,821,851.58
  5. Step 5: Solve for x
    x = 405,142,821,851.58/825,865.40
  6. Step 6: Final answer
    x = 490,567.62

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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.