Home / 1,086,991.80-1,630,487.70-768,127.20

Finding the Fourth Proportional to 1,086,991.80, 1,630,487.70 and 768,127.20

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Solution

The fourth proportional to 1,086,991.80, 1,630,487.70 and 768,127.20 is: 1,152,190.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,991.80 : 1,630,487.70 = 768,127.20 : x
  2. Step 2: Convert to fraction form
    1,086,991.80/1,630,487.70 = 768,127.20/x
  3. Step 3: Cross multiply
    1,086,991.80x = 1,630,487.70 × 768,127.20
  4. Step 4: Simplify right side
    1,086,991.80x = 1,252,421,951,635.44
  5. Step 5: Solve for x
    x = 1,252,421,951,635.44/1,086,991.80
  6. Step 6: Final answer
    x = 1,152,190.80

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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.