Home / 1,362,128.48-1,879,737.28-789,500.80

Finding the Fourth Proportional to 1,362,128.48, 1,879,737.28 and 789,500.80

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Solution

The fourth proportional to 1,362,128.48, 1,879,737.28 and 789,500.80 is: 1,089,511.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,362,128.48 : 1,879,737.28 = 789,500.80 : x
  2. Step 2: Convert to fraction form
    1,362,128.48/1,879,737.28 = 789,500.80/x
  3. Step 3: Cross multiply
    1,362,128.48x = 1,879,737.28 × 789,500.80
  4. Step 4: Simplify right side
    1,362,128.48x = 1,484,054,086,349.82
  5. Step 5: Solve for x
    x = 1,484,054,086,349.82/1,362,128.48
  6. Step 6: Final answer
    x = 1,089,511.09

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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.