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Finding the Fourth Proportional to 500,544.84, 690,763.08 and 285,680.64

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Solution

The fourth proportional to 500,544.84, 690,763.08 and 285,680.64 is: 394,245.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,544.84 : 690,763.08 = 285,680.64 : x
  2. Step 2: Convert to fraction form
    500,544.84/690,763.08 = 285,680.64/x
  3. Step 3: Cross multiply
    500,544.84x = 690,763.08 × 285,680.64
  4. Step 4: Simplify right side
    500,544.84x = 197,337,638,782.77
  5. Step 5: Solve for x
    x = 197,337,638,782.77/500,544.84
  6. Step 6: Final answer
    x = 394,245.68

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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.