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Finding the Fourth Proportional to 455,340.40, 682,427.40 and 349,635.40

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Solution

The fourth proportional to 455,340.40, 682,427.40 and 349,635.40 is: 524,005.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,340.40 : 682,427.40 = 349,635.40 : x
  2. Step 2: Convert to fraction form
    455,340.40/682,427.40 = 349,635.40/x
  3. Step 3: Cross multiply
    455,340.40x = 682,427.40 × 349,635.40
  4. Step 4: Simplify right side
    455,340.40x = 238,600,776,969.96
  5. Step 5: Solve for x
    x = 238,600,776,969.96/455,340.40
  6. Step 6: Final answer
    x = 524,005.29

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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.