Home / 509,723.64-764,918.10-190,131.18

Finding the Fourth Proportional to 509,723.64, 764,918.10 and 190,131.18

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Solution

The fourth proportional to 509,723.64, 764,918.10 and 190,131.18 is: 285,320.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,723.64 : 764,918.10 = 190,131.18 : x
  2. Step 2: Convert to fraction form
    509,723.64/764,918.10 = 190,131.18/x
  3. Step 3: Cross multiply
    509,723.64x = 764,918.10 × 190,131.18
  4. Step 4: Simplify right side
    509,723.64x = 145,434,780,956.36
  5. Step 5: Solve for x
    x = 145,434,780,956.36/509,723.64
  6. Step 6: Final answer
    x = 285,320.85

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Double scale
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1.5x scale

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.