Home / 764,998.40-1,147,497.60-688,890.80

Finding the Fourth Proportional to 764,998.40, 1,147,497.60 and 688,890.80

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Solution

The fourth proportional to 764,998.40, 1,147,497.60 and 688,890.80 is: 1,033,336.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,998.40 : 1,147,497.60 = 688,890.80 : x
  2. Step 2: Convert to fraction form
    764,998.40/1,147,497.60 = 688,890.80/x
  3. Step 3: Cross multiply
    764,998.40x = 1,147,497.60 × 688,890.80
  4. Step 4: Simplify right side
    764,998.40x = 790,500,539,662.08
  5. Step 5: Solve for x
    x = 790,500,539,662.08/764,998.40
  6. Step 6: Final answer
    x = 1,033,336.20

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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.