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Finding the Fourth Proportional to 469,552.96, 647,994.18 and 285,728.32

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Solution

The fourth proportional to 469,552.96, 647,994.18 and 285,728.32 is: 394,311.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,552.96 : 647,994.18 = 285,728.32 : x
  2. Step 2: Convert to fraction form
    469,552.96/647,994.18 = 285,728.32/x
  3. Step 3: Cross multiply
    469,552.96x = 647,994.18 × 285,728.32
  4. Step 4: Simplify right side
    469,552.96x = 185,150,288,421.18
  5. Step 5: Solve for x
    x = 185,150,288,421.18/469,552.96
  6. Step 6: Final answer
    x = 394,311.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.