Home / 919,619.88-1,269,075.30-511,747.96

Finding the Fourth Proportional to 919,619.88, 1,269,075.30 and 511,747.96

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Solution

The fourth proportional to 919,619.88, 1,269,075.30 and 511,747.96 is: 706,212.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,619.88 : 1,269,075.30 = 511,747.96 : x
  2. Step 2: Convert to fraction form
    919,619.88/1,269,075.30 = 511,747.96/x
  3. Step 3: Cross multiply
    919,619.88x = 1,269,075.30 × 511,747.96
  4. Step 4: Simplify right side
    919,619.88x = 649,446,695,861.39
  5. Step 5: Solve for x
    x = 649,446,695,861.39/919,619.88
  6. Step 6: Final answer
    x = 706,212.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.