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Finding the Fourth Proportional to 548,999.70, 823,499.55 and 360,650.40

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Solution

The fourth proportional to 548,999.70, 823,499.55 and 360,650.40 is: 540,975.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,999.70 : 823,499.55 = 360,650.40 : x
  2. Step 2: Convert to fraction form
    548,999.70/823,499.55 = 360,650.40/x
  3. Step 3: Cross multiply
    548,999.70x = 823,499.55 × 360,650.40
  4. Step 4: Simplify right side
    548,999.70x = 296,995,442,107.32
  5. Step 5: Solve for x
    x = 296,995,442,107.32/548,999.70
  6. Step 6: Final answer
    x = 540,975.60

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Similar ratio
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1.5x scale

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.