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Finding the Fourth Proportional to 462,721.82, 638,628.30 and 281,490.59

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Solution

The fourth proportional to 462,721.82, 638,628.30 and 281,490.59 is: 388,500.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,721.82 : 638,628.30 = 281,490.59 : x
  2. Step 2: Convert to fraction form
    462,721.82/638,628.30 = 281,490.59/x
  3. Step 3: Cross multiply
    462,721.82x = 638,628.30 × 281,490.59
  4. Step 4: Simplify right side
    462,721.82x = 179,767,858,554.27
  5. Step 5: Solve for x
    x = 179,767,858,554.27/462,721.82
  6. Step 6: Final answer
    x = 388,500.94

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1.5x scale

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.