Home / 874,374.05-1,311,026.81-419,104.60

Finding the Fourth Proportional to 874,374.05, 1,311,026.81 and 419,104.60

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Solution

The fourth proportional to 874,374.05, 1,311,026.81 and 419,104.60 is: 628,400.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,374.05 : 1,311,026.81 = 419,104.60 : x
  2. Step 2: Convert to fraction form
    874,374.05/1,311,026.81 = 419,104.60/x
  3. Step 3: Cross multiply
    874,374.05x = 1,311,026.81 × 419,104.60
  4. Step 4: Simplify right side
    874,374.05x = 549,457,361,421.24
  5. Step 5: Solve for x
    x = 549,457,361,421.24/874,374.05
  6. Step 6: Final answer
    x = 628,400.81

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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.