Home / 763,555.52-1,145,228.69-422,629.56

Finding the Fourth Proportional to 763,555.52, 1,145,228.69 and 422,629.56

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Solution

The fourth proportional to 763,555.52, 1,145,228.69 and 422,629.56 is: 633,886.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,555.52 : 1,145,228.69 = 422,629.56 : x
  2. Step 2: Convert to fraction form
    763,555.52/1,145,228.69 = 422,629.56/x
  3. Step 3: Cross multiply
    763,555.52x = 1,145,228.69 × 422,629.56
  4. Step 4: Simplify right side
    763,555.52x = 484,007,498,410.65
  5. Step 5: Solve for x
    x = 484,007,498,410.65/763,555.52
  6. Step 6: Final answer
    x = 633,886.45

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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.