Home / 500,408.84-690,613.50-285,581.24

Finding the Fourth Proportional to 500,408.84, 690,613.50 and 285,581.24

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Solution

The fourth proportional to 500,408.84, 690,613.50 and 285,581.24 is: 394,130.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,408.84 : 690,613.50 = 285,581.24 : x
  2. Step 2: Convert to fraction form
    500,408.84/690,613.50 = 285,581.24/x
  3. Step 3: Cross multiply
    500,408.84x = 690,613.50 × 285,581.24
  4. Step 4: Simplify right side
    500,408.84x = 197,226,259,690.74
  5. Step 5: Solve for x
    x = 197,226,259,690.74/500,408.84
  6. Step 6: Final answer
    x = 394,130.25

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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.