Home / 869,186.87-1,199,475.96-481,992.72

Finding the Fourth Proportional to 869,186.87, 1,199,475.96 and 481,992.72

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Solution

The fourth proportional to 869,186.87, 1,199,475.96 and 481,992.72 is: 665,148.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,186.87 : 1,199,475.96 = 481,992.72 : x
  2. Step 2: Convert to fraction form
    869,186.87/1,199,475.96 = 481,992.72/x
  3. Step 3: Cross multiply
    869,186.87x = 1,199,475.96 × 481,992.72
  4. Step 4: Simplify right side
    869,186.87x = 578,138,680,976.56
  5. Step 5: Solve for x
    x = 578,138,680,976.56/869,186.87
  6. Step 6: Final answer
    x = 665,148.89

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1.5x scale

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.