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Finding the Fourth Proportional to 664,015.20, 997,059.60 and 384,079.20

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Solution

The fourth proportional to 664,015.20, 997,059.60 and 384,079.20 is: 576,718.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,015.20 : 997,059.60 = 384,079.20 : x
  2. Step 2: Convert to fraction form
    664,015.20/997,059.60 = 384,079.20/x
  3. Step 3: Cross multiply
    664,015.20x = 997,059.60 × 384,079.20
  4. Step 4: Simplify right side
    664,015.20x = 382,949,853,520.32
  5. Step 5: Solve for x
    x = 382,949,853,520.32/664,015.20
  6. Step 6: Final answer
    x = 576,718.51

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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.