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Finding the Fourth Proportional to 505,720.96, 758,846.40 and 328,186.24

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Solution

The fourth proportional to 505,720.96, 758,846.40 and 328,186.24 is: 492,451.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,720.96 : 758,846.40 = 328,186.24 : x
  2. Step 2: Convert to fraction form
    505,720.96/758,846.40 = 328,186.24/x
  3. Step 3: Cross multiply
    505,720.96x = 758,846.40 × 328,186.24
  4. Step 4: Simplify right side
    505,720.96x = 249,042,946,753.54
  5. Step 5: Solve for x
    x = 249,042,946,753.54/505,720.96
  6. Step 6: Final answer
    x = 492,451.31

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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.