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Finding the Fourth Proportional to 500,412.84, 690,619.02 and 285,585.24

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Solution

The fourth proportional to 500,412.84, 690,619.02 and 285,585.24 is: 394,135.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,412.84 : 690,619.02 = 285,585.24 : x
  2. Step 2: Convert to fraction form
    500,412.84/690,619.02 = 285,585.24/x
  3. Step 3: Cross multiply
    500,412.84x = 690,619.02 × 285,585.24
  4. Step 4: Simplify right side
    500,412.84x = 197,230,598,575.27
  5. Step 5: Solve for x
    x = 197,230,598,575.27/500,412.84
  6. Step 6: Final answer
    x = 394,135.77

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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.