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Finding the Fourth Proportional to 505,842.93, 757,404.74 and 385,325.78

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Solution

The fourth proportional to 505,842.93, 757,404.74 and 385,325.78 is: 576,952.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,842.93 : 757,404.74 = 385,325.78 : x
  2. Step 2: Convert to fraction form
    505,842.93/757,404.74 = 385,325.78/x
  3. Step 3: Cross multiply
    505,842.93x = 757,404.74 × 385,325.78
  4. Step 4: Simplify right side
    505,842.93x = 291,847,569,392.49
  5. Step 5: Solve for x
    x = 291,847,569,392.49/505,842.93
  6. Step 6: Final answer
    x = 576,952.95

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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.