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Finding the Fourth Proportional to 505,816.20, 758,724.30 and 346,383.90

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Solution

The fourth proportional to 505,816.20, 758,724.30 and 346,383.90 is: 519,575.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,816.20 : 758,724.30 = 346,383.90 : x
  2. Step 2: Convert to fraction form
    505,816.20/758,724.30 = 346,383.90/x
  3. Step 3: Cross multiply
    505,816.20x = 758,724.30 × 346,383.90
  4. Step 4: Simplify right side
    505,816.20x = 262,809,882,058.77
  5. Step 5: Solve for x
    x = 262,809,882,058.77/505,816.20
  6. Step 6: Final answer
    x = 519,575.85

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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.