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Finding the Fourth Proportional to 682,387, 941,389.77 and 395,740.96

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Solution

The fourth proportional to 682,387, 941,389.77 and 395,740.96 is: 545,946.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,387 : 941,389.77 = 395,740.96 : x
  2. Step 2: Convert to fraction form
    682,387/941,389.77 = 395,740.96/x
  3. Step 3: Cross multiply
    682,387x = 941,389.77 × 395,740.96
  4. Step 4: Simplify right side
    682,387x = 372,546,491,313.98
  5. Step 5: Solve for x
    x = 372,546,491,313.98/682,387
  6. Step 6: Final answer
    x = 545,946.06

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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.