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Finding the Fourth Proportional to 503,245.46, 694,518.75 and 288,405.51

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Solution

The fourth proportional to 503,245.46, 694,518.75 and 288,405.51 is: 398,022.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,245.46 : 694,518.75 = 288,405.51 : x
  2. Step 2: Convert to fraction form
    503,245.46/694,518.75 = 288,405.51/x
  3. Step 3: Cross multiply
    503,245.46x = 694,518.75 × 288,405.51
  4. Step 4: Simplify right side
    503,245.46x = 200,303,034,298.31
  5. Step 5: Solve for x
    x = 200,303,034,298.31/503,245.46
  6. Step 6: Final answer
    x = 398,022.54

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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.