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Finding the Fourth Proportional to 1,318,917.29, 1,977,342.39 and 520,796.25

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Solution

The fourth proportional to 1,318,917.29, 1,977,342.39 and 520,796.25 is: 780,786.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,917.29 : 1,977,342.39 = 520,796.25 : x
  2. Step 2: Convert to fraction form
    1,318,917.29/1,977,342.39 = 520,796.25/x
  3. Step 3: Cross multiply
    1,318,917.29x = 1,977,342.39 × 520,796.25
  4. Step 4: Simplify right side
    1,318,917.29x = 1,029,792,501,678.04
  5. Step 5: Solve for x
    x = 1,029,792,501,678.04/1,318,917.29
  6. Step 6: Final answer
    x = 780,786.27

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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.