Home / 513,631.05-708,375.92-309,637.26

Finding the Fourth Proportional to 513,631.05, 708,375.92 and 309,637.26

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Solution

The fourth proportional to 513,631.05, 708,375.92 and 309,637.26 is: 427,037.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,631.05 : 708,375.92 = 309,637.26 : x
  2. Step 2: Convert to fraction form
    513,631.05/708,375.92 = 309,637.26/x
  3. Step 3: Cross multiply
    513,631.05x = 708,375.92 × 309,637.26
  4. Step 4: Simplify right side
    513,631.05x = 219,339,578,918.78
  5. Step 5: Solve for x
    x = 219,339,578,918.78/513,631.05
  6. Step 6: Final answer
    x = 427,037.23

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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.