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Finding the Fourth Proportional to 500,895, 691,235.10 and 274,535.64

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Solution

The fourth proportional to 500,895, 691,235.10 and 274,535.64 is: 378,859.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,895 : 691,235.10 = 274,535.64 : x
  2. Step 2: Convert to fraction form
    500,895/691,235.10 = 274,535.64/x
  3. Step 3: Cross multiply
    500,895x = 691,235.10 × 274,535.64
  4. Step 4: Simplify right side
    500,895x = 189,768,670,568.96
  5. Step 5: Solve for x
    x = 189,768,670,568.96/500,895
  6. Step 6: Final answer
    x = 378,859.18

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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.