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Finding the Fourth Proportional to 487,628.81, 672,633.51 and 322,057.79

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Solution

The fourth proportional to 487,628.81, 672,633.51 and 322,057.79 is: 444,245.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,628.81 : 672,633.51 = 322,057.79 : x
  2. Step 2: Convert to fraction form
    487,628.81/672,633.51 = 322,057.79/x
  3. Step 3: Cross multiply
    487,628.81x = 672,633.51 × 322,057.79
  4. Step 4: Simplify right side
    487,628.81x = 216,626,861,710.54
  5. Step 5: Solve for x
    x = 216,626,861,710.54/487,628.81
  6. Step 6: Final answer
    x = 444,245.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.