Home / 509,619.60-764,429.40-454,507.20

Finding the Fourth Proportional to 509,619.60, 764,429.40 and 454,507.20

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Solution

The fourth proportional to 509,619.60, 764,429.40 and 454,507.20 is: 681,760.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,619.60 : 764,429.40 = 454,507.20 : x
  2. Step 2: Convert to fraction form
    509,619.60/764,429.40 = 454,507.20/x
  3. Step 3: Cross multiply
    509,619.60x = 764,429.40 × 454,507.20
  4. Step 4: Simplify right side
    509,619.60x = 347,438,666,191.68
  5. Step 5: Solve for x
    x = 347,438,666,191.68/509,619.60
  6. Step 6: Final answer
    x = 681,760.80

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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.