Home / 976,619.80-1,463,763.30-407,999.80

Finding the Fourth Proportional to 976,619.80, 1,463,763.30 and 407,999.80

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Solution

The fourth proportional to 976,619.80, 1,463,763.30 and 407,999.80 is: 611,512.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    976,619.80 : 1,463,763.30 = 407,999.80 : x
  2. Step 2: Convert to fraction form
    976,619.80/1,463,763.30 = 407,999.80/x
  3. Step 3: Cross multiply
    976,619.80x = 1,463,763.30 × 407,999.80
  4. Step 4: Simplify right side
    976,619.80x = 597,215,133,647.34
  5. Step 5: Solve for x
    x = 597,215,133,647.34/976,619.80
  6. Step 6: Final answer
    x = 611,512.42

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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.