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Finding the Fourth Proportional to 447,573.43, 617,664.93 and 316,985.03

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Solution

The fourth proportional to 447,573.43, 617,664.93 and 316,985.03 is: 437,448.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,573.43 : 617,664.93 = 316,985.03 : x
  2. Step 2: Convert to fraction form
    447,573.43/617,664.93 = 316,985.03/x
  3. Step 3: Cross multiply
    447,573.43x = 617,664.93 × 316,985.03
  4. Step 4: Simplify right side
    447,573.43x = 195,790,536,366.00
  5. Step 5: Solve for x
    x = 195,790,536,366.00/447,573.43
  6. Step 6: Final answer
    x = 437,448.97

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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.