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Finding the Fourth Proportional to 621,554.84, 857,617.26 and 363,382.04

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Solution

The fourth proportional to 621,554.84, 857,617.26 and 363,382.04 is: 501,392.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,554.84 : 857,617.26 = 363,382.04 : x
  2. Step 2: Convert to fraction form
    621,554.84/857,617.26 = 363,382.04/x
  3. Step 3: Cross multiply
    621,554.84x = 857,617.26 × 363,382.04
  4. Step 4: Simplify right side
    621,554.84x = 311,642,709,478.01
  5. Step 5: Solve for x
    x = 311,642,709,478.01/621,554.84
  6. Step 6: Final answer
    x = 501,392.14

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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.