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Finding the Fourth Proportional to 576,139.20, 863,949.60 and 260,433.60

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Solution

The fourth proportional to 576,139.20, 863,949.60 and 260,433.60 is: 390,533.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,139.20 : 863,949.60 = 260,433.60 : x
  2. Step 2: Convert to fraction form
    576,139.20/863,949.60 = 260,433.60/x
  3. Step 3: Cross multiply
    576,139.20x = 863,949.60 × 260,433.60
  4. Step 4: Simplify right side
    576,139.20x = 225,001,504,546.56
  5. Step 5: Solve for x
    x = 225,001,504,546.56/576,139.20
  6. Step 6: Final answer
    x = 390,533.23

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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.