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Finding the Fourth Proportional to 711,650.61, 982,076.69 and 389,362

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Solution

The fourth proportional to 711,650.61, 982,076.69 and 389,362 is: 537,318.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,650.61 : 982,076.69 = 389,362 : x
  2. Step 2: Convert to fraction form
    711,650.61/982,076.69 = 389,362/x
  3. Step 3: Cross multiply
    711,650.61x = 982,076.69 × 389,362
  4. Step 4: Simplify right side
    711,650.61x = 382,383,342,224.97
  5. Step 5: Solve for x
    x = 382,383,342,224.97/711,650.61
  6. Step 6: Final answer
    x = 537,318.93

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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.