Home / 879,645.40-1,318,593.30-405,503.80

Finding the Fourth Proportional to 879,645.40, 1,318,593.30 and 405,503.80

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Solution

The fourth proportional to 879,645.40, 1,318,593.30 and 405,503.80 is: 607,852.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,645.40 : 1,318,593.30 = 405,503.80 : x
  2. Step 2: Convert to fraction form
    879,645.40/1,318,593.30 = 405,503.80/x
  3. Step 3: Cross multiply
    879,645.40x = 1,318,593.30 × 405,503.80
  4. Step 4: Simplify right side
    879,645.40x = 534,694,593,804.54
  5. Step 5: Solve for x
    x = 534,694,593,804.54/879,645.40
  6. Step 6: Final answer
    x = 607,852.43

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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.