Home / 645,348.06-968,288.58-285,329.79

Finding the Fourth Proportional to 645,348.06, 968,288.58 and 285,329.79

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Solution

The fourth proportional to 645,348.06, 968,288.58 and 285,329.79 is: 428,112.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,348.06 : 968,288.58 = 285,329.79 : x
  2. Step 2: Convert to fraction form
    645,348.06/968,288.58 = 285,329.79/x
  3. Step 3: Cross multiply
    645,348.06x = 968,288.58 × 285,329.79
  4. Step 4: Simplify right side
    645,348.06x = 276,281,577,190.80
  5. Step 5: Solve for x
    x = 276,281,577,190.80/645,348.06
  6. Step 6: Final answer
    x = 428,112.51

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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.