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Finding the Fourth Proportional to 505,660.80, 757,972.80 and 295,190.40

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Solution

The fourth proportional to 505,660.80, 757,972.80 and 295,190.40 is: 442,482.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,660.80 : 757,972.80 = 295,190.40 : x
  2. Step 2: Convert to fraction form
    505,660.80/757,972.80 = 295,190.40/x
  3. Step 3: Cross multiply
    505,660.80x = 757,972.80 × 295,190.40
  4. Step 4: Simplify right side
    505,660.80x = 223,746,294,021.12
  5. Step 5: Solve for x
    x = 223,746,294,021.12/505,660.80
  6. Step 6: Final answer
    x = 442,482.97

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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.