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Finding the Fourth Proportional to 682,374.96, 941,679 and 380,588.40

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Solution

The fourth proportional to 682,374.96, 941,679 and 380,588.40 is: 525,212.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,374.96 : 941,679 = 380,588.40 : x
  2. Step 2: Convert to fraction form
    682,374.96/941,679 = 380,588.40/x
  3. Step 3: Cross multiply
    682,374.96x = 941,679 × 380,588.40
  4. Step 4: Simplify right side
    682,374.96x = 358,392,103,923.60
  5. Step 5: Solve for x
    x = 358,392,103,923.60/682,374.96
  6. Step 6: Final answer
    x = 525,212.86

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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.