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Finding the Fourth Proportional to 680,257.82, 938,885.90 and 450,409.79

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Solution

The fourth proportional to 680,257.82, 938,885.90 and 450,409.79 is: 621,651.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,257.82 : 938,885.90 = 450,409.79 : x
  2. Step 2: Convert to fraction form
    680,257.82/938,885.90 = 450,409.79/x
  3. Step 3: Cross multiply
    680,257.82x = 938,885.90 × 450,409.79
  4. Step 4: Simplify right side
    680,257.82x = 422,883,394,106.48
  5. Step 5: Solve for x
    x = 422,883,394,106.48/680,257.82
  6. Step 6: Final answer
    x = 621,651.65

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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.