Home / 505,530.37-697,311.51-384,406.12

Finding the Fourth Proportional to 505,530.37, 697,311.51 and 384,406.12

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Solution

The fourth proportional to 505,530.37, 697,311.51 and 384,406.12 is: 530,236.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,530.37 : 697,311.51 = 384,406.12 : x
  2. Step 2: Convert to fraction form
    505,530.37/697,311.51 = 384,406.12/x
  3. Step 3: Cross multiply
    505,530.37x = 697,311.51 × 384,406.12
  4. Step 4: Simplify right side
    505,530.37x = 268,050,811,990.44
  5. Step 5: Solve for x
    x = 268,050,811,990.44/505,530.37
  6. Step 6: Final answer
    x = 530,236.81

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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.