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Finding the Fourth Proportional to 682,345.50, 941,332.43 and 395,699.60

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Solution

The fourth proportional to 682,345.50, 941,332.43 and 395,699.60 is: 545,888.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,345.50 : 941,332.43 = 395,699.60 : x
  2. Step 2: Convert to fraction form
    682,345.50/941,332.43 = 395,699.60/x
  3. Step 3: Cross multiply
    682,345.50x = 941,332.43 × 395,699.60
  4. Step 4: Simplify right side
    682,345.50x = 372,484,862,300.62
  5. Step 5: Solve for x
    x = 372,484,862,300.62/682,345.50
  6. Step 6: Final answer
    x = 545,888.94

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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.