Home / 885,920.80-1,328,708.40-286,736.80

Finding the Fourth Proportional to 885,920.80, 1,328,708.40 and 286,736.80

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Solution

The fourth proportional to 885,920.80, 1,328,708.40 and 286,736.80 is: 430,049.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,920.80 : 1,328,708.40 = 286,736.80 : x
  2. Step 2: Convert to fraction form
    885,920.80/1,328,708.40 = 286,736.80/x
  3. Step 3: Cross multiply
    885,920.80x = 1,328,708.40 × 286,736.80
  4. Step 4: Simplify right side
    885,920.80x = 380,989,594,749.12
  5. Step 5: Solve for x
    x = 380,989,594,749.12/885,920.80
  6. Step 6: Final answer
    x = 430,049.27

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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.