Home / 513,316.31-769,778.44-205,474.19

Finding the Fourth Proportional to 513,316.31, 769,778.44 and 205,474.19

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Solution

The fourth proportional to 513,316.31, 769,778.44 and 205,474.19 is: 308,132.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,316.31 : 769,778.44 = 205,474.19 : x
  2. Step 2: Convert to fraction form
    513,316.31/769,778.44 = 205,474.19/x
  3. Step 3: Cross multiply
    513,316.31x = 769,778.44 × 205,474.19
  4. Step 4: Simplify right side
    513,316.31x = 158,169,597,075.89
  5. Step 5: Solve for x
    x = 158,169,597,075.89/513,316.31
  6. Step 6: Final answer
    x = 308,132.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.