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Finding the Fourth Proportional to 457,490.82, 685,605.12 and 330,116.16

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Solution

The fourth proportional to 457,490.82, 685,605.12 and 330,116.16 is: 494,718.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,490.82 : 685,605.12 = 330,116.16 : x
  2. Step 2: Convert to fraction form
    457,490.82/685,605.12 = 330,116.16/x
  3. Step 3: Cross multiply
    457,490.82x = 685,605.12 × 330,116.16
  4. Step 4: Simplify right side
    457,490.82x = 226,329,329,490.74
  5. Step 5: Solve for x
    x = 226,329,329,490.74/457,490.82
  6. Step 6: Final answer
    x = 494,718.84

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1.5x scale

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.