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Finding the Fourth Proportional to 500,865.12, 691,200 and 274,510.08

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Solution

The fourth proportional to 500,865.12, 691,200 and 274,510.08 is: 378,827.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,865.12 : 691,200 = 274,510.08 : x
  2. Step 2: Convert to fraction form
    500,865.12/691,200 = 274,510.08/x
  3. Step 3: Cross multiply
    500,865.12x = 691,200 × 274,510.08
  4. Step 4: Simplify right side
    500,865.12x = 189,741,367,296
  5. Step 5: Solve for x
    x = 189,741,367,296/500,865.12
  6. Step 6: Final answer
    x = 378,827.27

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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.