Home / 840,395.25-1,260,603.86-279,429.75

Finding the Fourth Proportional to 840,395.25, 1,260,603.86 and 279,429.75

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Solution

The fourth proportional to 840,395.25, 1,260,603.86 and 279,429.75 is: 419,148.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,395.25 : 1,260,603.86 = 279,429.75 : x
  2. Step 2: Convert to fraction form
    840,395.25/1,260,603.86 = 279,429.75/x
  3. Step 3: Cross multiply
    840,395.25x = 1,260,603.86 × 279,429.75
  4. Step 4: Simplify right side
    840,395.25x = 352,250,220,051.69
  5. Step 5: Solve for x
    x = 352,250,220,051.69/840,395.25
  6. Step 6: Final answer
    x = 419,148.28

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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.