Home / 764,387.60-1,145,004.60-447,885.20

Finding the Fourth Proportional to 764,387.60, 1,145,004.60 and 447,885.20

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Solution

The fourth proportional to 764,387.60, 1,145,004.60 and 447,885.20 is: 670,903.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,387.60 : 1,145,004.60 = 447,885.20 : x
  2. Step 2: Convert to fraction form
    764,387.60/1,145,004.60 = 447,885.20/x
  3. Step 3: Cross multiply
    764,387.60x = 1,145,004.60 × 447,885.20
  4. Step 4: Simplify right side
    764,387.60x = 512,830,614,271.92
  5. Step 5: Solve for x
    x = 512,830,614,271.92/764,387.60
  6. Step 6: Final answer
    x = 670,903.89

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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.