Home / 1,319,080.70-1,978,621.05-520,096.70

Finding the Fourth Proportional to 1,319,080.70, 1,978,621.05 and 520,096.70

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Solution

The fourth proportional to 1,319,080.70, 1,978,621.05 and 520,096.70 is: 780,145.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,080.70 : 1,978,621.05 = 520,096.70 : x
  2. Step 2: Convert to fraction form
    1,319,080.70/1,978,621.05 = 520,096.70/x
  3. Step 3: Cross multiply
    1,319,080.70x = 1,978,621.05 × 520,096.70
  4. Step 4: Simplify right side
    1,319,080.70x = 1,029,074,278,655.54
  5. Step 5: Solve for x
    x = 1,029,074,278,655.54/1,319,080.70
  6. Step 6: Final answer
    x = 780,145.05

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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.