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Finding the Fourth Proportional to 543,517.56, 749,886.03 and 313,991.09

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Solution

The fourth proportional to 543,517.56, 749,886.03 and 313,991.09 is: 433,210.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,517.56 : 749,886.03 = 313,991.09 : x
  2. Step 2: Convert to fraction form
    543,517.56/749,886.03 = 313,991.09/x
  3. Step 3: Cross multiply
    543,517.56x = 749,886.03 × 313,991.09
  4. Step 4: Simplify right side
    543,517.56x = 235,457,528,186.04
  5. Step 5: Solve for x
    x = 235,457,528,186.04/543,517.56
  6. Step 6: Final answer
    x = 433,210.53

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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.