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Finding the Fourth Proportional to 505,960.35, 759,454.07 and 253,421.79

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Solution

The fourth proportional to 505,960.35, 759,454.07 and 253,421.79 is: 380,389.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,960.35 : 759,454.07 = 253,421.79 : x
  2. Step 2: Convert to fraction form
    505,960.35/759,454.07 = 253,421.79/x
  3. Step 3: Cross multiply
    505,960.35x = 759,454.07 × 253,421.79
  4. Step 4: Simplify right side
    505,960.35x = 192,462,208,575.08
  5. Step 5: Solve for x
    x = 192,462,208,575.08/505,960.35
  6. Step 6: Final answer
    x = 380,389.90

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Double scale
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Similar ratio
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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.