Home / 627,147.77-863,881.40-505,949.69

Finding the Fourth Proportional to 627,147.77, 863,881.40 and 505,949.69

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Solution

The fourth proportional to 627,147.77, 863,881.40 and 505,949.69 is: 696,933.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,147.77 : 863,881.40 = 505,949.69 : x
  2. Step 2: Convert to fraction form
    627,147.77/863,881.40 = 505,949.69/x
  3. Step 3: Cross multiply
    627,147.77x = 863,881.40 × 505,949.69
  4. Step 4: Simplify right side
    627,147.77x = 437,080,529,951.34
  5. Step 5: Solve for x
    x = 437,080,529,951.34/627,147.77
  6. Step 6: Final answer
    x = 696,933.89

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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.