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Finding the Fourth Proportional to 447,572.43, 617,663.55 and 316,984.03

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Solution

The fourth proportional to 447,572.43, 617,663.55 and 316,984.03 is: 437,447.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,572.43 : 617,663.55 = 316,984.03 : x
  2. Step 2: Convert to fraction form
    447,572.43/617,663.55 = 316,984.03/x
  3. Step 3: Cross multiply
    447,572.43x = 617,663.55 × 316,984.03
  4. Step 4: Simplify right side
    447,572.43x = 195,789,483,223.88
  5. Step 5: Solve for x
    x = 195,789,483,223.88/447,572.43
  6. Step 6: Final answer
    x = 437,447.60

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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.