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Finding the Fourth Proportional to 485,513.55, 728,651.70 and 336,800.34

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Solution

The fourth proportional to 485,513.55, 728,651.70 and 336,800.34 is: 505,465.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,513.55 : 728,651.70 = 336,800.34 : x
  2. Step 2: Convert to fraction form
    485,513.55/728,651.70 = 336,800.34/x
  3. Step 3: Cross multiply
    485,513.55x = 728,651.70 × 336,800.34
  4. Step 4: Simplify right side
    485,513.55x = 245,410,140,301.58
  5. Step 5: Solve for x
    x = 245,410,140,301.58/485,513.55
  6. Step 6: Final answer
    x = 505,465.07

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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.