Home / 455,768.10-628,975.53-286,095.78

Finding the Fourth Proportional to 455,768.10, 628,975.53 and 286,095.78

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Solution

The fourth proportional to 455,768.10, 628,975.53 and 286,095.78 is: 394,821.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,768.10 : 628,975.53 = 286,095.78 : x
  2. Step 2: Convert to fraction form
    455,768.10/628,975.53 = 286,095.78/x
  3. Step 3: Cross multiply
    455,768.10x = 628,975.53 × 286,095.78
  4. Step 4: Simplify right side
    455,768.10x = 179,947,244,856.26
  5. Step 5: Solve for x
    x = 179,947,244,856.26/455,768.10
  6. Step 6: Final answer
    x = 394,821.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.