Home / 455,038.20-682,703.10-305,447.40

Finding the Fourth Proportional to 455,038.20, 682,703.10 and 305,447.40

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Solution

The fourth proportional to 455,038.20, 682,703.10 and 305,447.40 is: 458,268.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,038.20 : 682,703.10 = 305,447.40 : x
  2. Step 2: Convert to fraction form
    455,038.20/682,703.10 = 305,447.40/x
  3. Step 3: Cross multiply
    455,038.20x = 682,703.10 × 305,447.40
  4. Step 4: Simplify right side
    455,038.20x = 208,529,886,866.94
  5. Step 5: Solve for x
    x = 208,529,886,866.94/455,038.20
  6. Step 6: Final answer
    x = 458,268.97

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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.