Home / 987,699.80-1,480,383.30-419,079.80

Finding the Fourth Proportional to 987,699.80, 1,480,383.30 and 419,079.80

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Solution

The fourth proportional to 987,699.80, 1,480,383.30 and 419,079.80 is: 628,124.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,699.80 : 1,480,383.30 = 419,079.80 : x
  2. Step 2: Convert to fraction form
    987,699.80/1,480,383.30 = 419,079.80/x
  3. Step 3: Cross multiply
    987,699.80x = 1,480,383.30 × 419,079.80
  4. Step 4: Simplify right side
    987,699.80x = 620,398,737,287.34
  5. Step 5: Solve for x
    x = 620,398,737,287.34/987,699.80
  6. Step 6: Final answer
    x = 628,124.80

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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.