Home / 825,434.59-1,238,236.73-285,689.80

Finding the Fourth Proportional to 825,434.59, 1,238,236.73 and 285,689.80

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Solution

The fourth proportional to 825,434.59, 1,238,236.73 and 285,689.80 is: 428,564.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,434.59 : 1,238,236.73 = 285,689.80 : x
  2. Step 2: Convert to fraction form
    825,434.59/1,238,236.73 = 285,689.80/x
  3. Step 3: Cross multiply
    825,434.59x = 1,238,236.73 × 285,689.80
  4. Step 4: Simplify right side
    825,434.59x = 353,751,603,746.35
  5. Step 5: Solve for x
    x = 353,751,603,746.35/825,434.59
  6. Step 6: Final answer
    x = 428,564.07

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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.