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Finding the Fourth Proportional to 398,643.87, 598,246.02 and 360,529.59

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Solution

The fourth proportional to 398,643.87, 598,246.02 and 360,529.59 is: 541,047.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,643.87 : 598,246.02 = 360,529.59 : x
  2. Step 2: Convert to fraction form
    398,643.87/598,246.02 = 360,529.59/x
  3. Step 3: Cross multiply
    398,643.87x = 598,246.02 × 360,529.59
  4. Step 4: Simplify right side
    398,643.87x = 215,685,392,309.73
  5. Step 5: Solve for x
    x = 215,685,392,309.73/398,643.87
  6. Step 6: Final answer
    x = 541,047.81

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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.