Home / 764,431.20-1,145,869.20-448,725.60

Finding the Fourth Proportional to 764,431.20, 1,145,869.20 and 448,725.60

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Solution

The fourth proportional to 764,431.20, 1,145,869.20 and 448,725.60 is: 672,631.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,431.20 : 1,145,869.20 = 448,725.60 : x
  2. Step 2: Convert to fraction form
    764,431.20/1,145,869.20 = 448,725.60/x
  3. Step 3: Cross multiply
    764,431.20x = 1,145,869.20 × 448,725.60
  4. Step 4: Simplify right side
    764,431.20x = 514,180,844,291.52
  5. Step 5: Solve for x
    x = 514,180,844,291.52/764,431.20
  6. Step 6: Final answer
    x = 672,631.94

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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.