Home / 1,238,811.80-1,858,217.70-397,448.60

Finding the Fourth Proportional to 1,238,811.80, 1,858,217.70 and 397,448.60

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Solution

The fourth proportional to 1,238,811.80, 1,858,217.70 and 397,448.60 is: 596,172.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,811.80 : 1,858,217.70 = 397,448.60 : x
  2. Step 2: Convert to fraction form
    1,238,811.80/1,858,217.70 = 397,448.60/x
  3. Step 3: Cross multiply
    1,238,811.80x = 1,858,217.70 × 397,448.60
  4. Step 4: Simplify right side
    1,238,811.80x = 738,546,023,360.22
  5. Step 5: Solve for x
    x = 738,546,023,360.22/1,238,811.80
  6. Step 6: Final answer
    x = 596,172.90

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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.