Home / 821,142.32-1,231,537.44-479,358.08

Finding the Fourth Proportional to 821,142.32, 1,231,537.44 and 479,358.08

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Solution

The fourth proportional to 821,142.32, 1,231,537.44 and 479,358.08 is: 718,934.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,142.32 : 1,231,537.44 = 479,358.08 : x
  2. Step 2: Convert to fraction form
    821,142.32/1,231,537.44 = 479,358.08/x
  3. Step 3: Cross multiply
    821,142.32x = 1,231,537.44 × 479,358.08
  4. Step 4: Simplify right side
    821,142.32x = 590,347,422,686.52
  5. Step 5: Solve for x
    x = 590,347,422,686.52/821,142.32
  6. Step 6: Final answer
    x = 718,934.35

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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.