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Finding the Fourth Proportional to 621,732.94, 857,991.49 and 353,460.94

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Solution

The fourth proportional to 621,732.94, 857,991.49 and 353,460.94 is: 487,776.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,732.94 : 857,991.49 = 353,460.94 : x
  2. Step 2: Convert to fraction form
    621,732.94/857,991.49 = 353,460.94/x
  3. Step 3: Cross multiply
    621,732.94x = 857,991.49 × 353,460.94
  4. Step 4: Simplify right side
    621,732.94x = 303,266,475,538.77
  5. Step 5: Solve for x
    x = 303,266,475,538.77/621,732.94
  6. Step 6: Final answer
    x = 487,776.11

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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.