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Finding the Fourth Proportional to 621,682.28, 857,920.14 and 349,750.28

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Solution

The fourth proportional to 621,682.28, 857,920.14 and 349,750.28 is: 482,654.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,682.28 : 857,920.14 = 349,750.28 : x
  2. Step 2: Convert to fraction form
    621,682.28/857,920.14 = 349,750.28/x
  3. Step 3: Cross multiply
    621,682.28x = 857,920.14 × 349,750.28
  4. Step 4: Simplify right side
    621,682.28x = 300,057,809,182.64
  5. Step 5: Solve for x
    x = 300,057,809,182.64/621,682.28
  6. Step 6: Final answer
    x = 482,654.60

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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.