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Finding the Fourth Proportional to 682,310.40, 941,567.94 and 380,504.40

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Solution

The fourth proportional to 682,310.40, 941,567.94 and 380,504.40 is: 525,084.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,310.40 : 941,567.94 = 380,504.40 : x
  2. Step 2: Convert to fraction form
    682,310.40/941,567.94 = 380,504.40/x
  3. Step 3: Cross multiply
    682,310.40x = 941,567.94 × 380,504.40
  4. Step 4: Simplify right side
    682,310.40x = 358,270,744,068.94
  5. Step 5: Solve for x
    x = 358,270,744,068.94/682,310.40
  6. Step 6: Final answer
    x = 525,084.69

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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.