Home / 679,198.35-937,255.53-407,130.09

Finding the Fourth Proportional to 679,198.35, 937,255.53 and 407,130.09

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Solution

The fourth proportional to 679,198.35, 937,255.53 and 407,130.09 is: 561,816.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,198.35 : 937,255.53 = 407,130.09 : x
  2. Step 2: Convert to fraction form
    679,198.35/937,255.53 = 407,130.09/x
  3. Step 3: Cross multiply
    679,198.35x = 937,255.53 × 407,130.09
  4. Step 4: Simplify right side
    679,198.35x = 381,584,928,281.90
  5. Step 5: Solve for x
    x = 381,584,928,281.90/679,198.35
  6. Step 6: Final answer
    x = 561,816.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.