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Finding the Fourth Proportional to 481,420.34, 664,382.88 and 290,429.63

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Solution

The fourth proportional to 481,420.34, 664,382.88 and 290,429.63 is: 400,806.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,420.34 : 664,382.88 = 290,429.63 : x
  2. Step 2: Convert to fraction form
    481,420.34/664,382.88 = 290,429.63/x
  3. Step 3: Cross multiply
    481,420.34x = 664,382.88 × 290,429.63
  4. Step 4: Simplify right side
    481,420.34x = 192,956,474,016.73
  5. Step 5: Solve for x
    x = 192,956,474,016.73/481,420.34
  6. Step 6: Final answer
    x = 400,806.65

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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.