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Finding the Fourth Proportional to 553,613.88, 763,987.16 and 298,965.07

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Solution

The fourth proportional to 553,613.88, 763,987.16 and 298,965.07 is: 412,571.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,613.88 : 763,987.16 = 298,965.07 : x
  2. Step 2: Convert to fraction form
    553,613.88/763,987.16 = 298,965.07/x
  3. Step 3: Cross multiply
    553,613.88x = 763,987.16 × 298,965.07
  4. Step 4: Simplify right side
    553,613.88x = 228,405,469,453.74
  5. Step 5: Solve for x
    x = 228,405,469,453.74/553,613.88
  6. Step 6: Final answer
    x = 412,571.79

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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.