Home / 455,771.10-628,979.67-286,098.78

Finding the Fourth Proportional to 455,771.10, 628,979.67 and 286,098.78

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Solution

The fourth proportional to 455,771.10, 628,979.67 and 286,098.78 is: 394,826.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,771.10 : 628,979.67 = 286,098.78 : x
  2. Step 2: Convert to fraction form
    455,771.10/628,979.67 = 286,098.78/x
  3. Step 3: Cross multiply
    455,771.10x = 628,979.67 × 286,098.78
  4. Step 4: Simplify right side
    455,771.10x = 179,950,316,231.80
  5. Step 5: Solve for x
    x = 179,950,316,231.80/455,771.10
  6. Step 6: Final answer
    x = 394,826.08

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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.