Home / 509,619.40-764,429.10-360,028.60

Finding the Fourth Proportional to 509,619.40, 764,429.10 and 360,028.60

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Solution

The fourth proportional to 509,619.40, 764,429.10 and 360,028.60 is: 540,042.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,619.40 : 764,429.10 = 360,028.60 : x
  2. Step 2: Convert to fraction form
    509,619.40/764,429.10 = 360,028.60/x
  3. Step 3: Cross multiply
    509,619.40x = 764,429.10 × 360,028.60
  4. Step 4: Simplify right side
    509,619.40x = 275,216,338,672.26
  5. Step 5: Solve for x
    x = 275,216,338,672.26/509,619.40
  6. Step 6: Final answer
    x = 540,042.90

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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.