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Finding the Fourth Proportional to 642,473.53, 886,600.24 and 355,991.11

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Solution

The fourth proportional to 642,473.53, 886,600.24 and 355,991.11 is: 491,260.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,473.53 : 886,600.24 = 355,991.11 : x
  2. Step 2: Convert to fraction form
    642,473.53/886,600.24 = 355,991.11/x
  3. Step 3: Cross multiply
    642,473.53x = 886,600.24 × 355,991.11
  4. Step 4: Simplify right side
    642,473.53x = 315,621,800,457.39
  5. Step 5: Solve for x
    x = 315,621,800,457.39/642,473.53
  6. Step 6: Final answer
    x = 491,260.40

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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.