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Finding the Fourth Proportional to 485,309.70, 727,964.55 and 366,336.90

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Solution

The fourth proportional to 485,309.70, 727,964.55 and 366,336.90 is: 549,505.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,309.70 : 727,964.55 = 366,336.90 : x
  2. Step 2: Convert to fraction form
    485,309.70/727,964.55 = 366,336.90/x
  3. Step 3: Cross multiply
    485,309.70x = 727,964.55 × 366,336.90
  4. Step 4: Simplify right side
    485,309.70x = 266,680,276,556.90
  5. Step 5: Solve for x
    x = 266,680,276,556.90/485,309.70
  6. Step 6: Final answer
    x = 549,505.35

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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.