Home / 1,079,733.79-1,618,355.12-405,385

Finding the Fourth Proportional to 1,079,733.79, 1,618,355.12 and 405,385

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Solution

The fourth proportional to 1,079,733.79, 1,618,355.12 and 405,385 is: 607,609.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079,733.79 : 1,618,355.12 = 405,385 : x
  2. Step 2: Convert to fraction form
    1,079,733.79/1,618,355.12 = 405,385/x
  3. Step 3: Cross multiply
    1,079,733.79x = 1,618,355.12 × 405,385
  4. Step 4: Simplify right side
    1,079,733.79x = 656,056,890,321.20
  5. Step 5: Solve for x
    x = 656,056,890,321.20/1,079,733.79
  6. Step 6: Final answer
    x = 607,609.85

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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.