Home / 640,828.89-961,821.14-341,558.73

Finding the Fourth Proportional to 640,828.89, 961,821.14 and 341,558.73

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Solution

The fourth proportional to 640,828.89, 961,821.14 and 341,558.73 is: 512,646.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,828.89 : 961,821.14 = 341,558.73 : x
  2. Step 2: Convert to fraction form
    640,828.89/961,821.14 = 341,558.73/x
  3. Step 3: Cross multiply
    640,828.89x = 961,821.14 × 341,558.73
  4. Step 4: Simplify right side
    640,828.89x = 328,518,405,357.76
  5. Step 5: Solve for x
    x = 328,518,405,357.76/640,828.89
  6. Step 6: Final answer
    x = 512,646.06

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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.