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Finding the Fourth Proportional to 455,429.90, 682,561.65 and 349,724.90

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Solution

The fourth proportional to 455,429.90, 682,561.65 and 349,724.90 is: 524,139.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,429.90 : 682,561.65 = 349,724.90 : x
  2. Step 2: Convert to fraction form
    455,429.90/682,561.65 = 349,724.90/x
  3. Step 3: Cross multiply
    455,429.90x = 682,561.65 × 349,724.90
  4. Step 4: Simplify right side
    455,429.90x = 238,708,804,790.09
  5. Step 5: Solve for x
    x = 238,708,804,790.09/455,429.90
  6. Step 6: Final answer
    x = 524,139.51

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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.