Home / 686,511.36-1,029,754.08-213,186.24

Finding the Fourth Proportional to 686,511.36, 1,029,754.08 and 213,186.24

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Solution

The fourth proportional to 686,511.36, 1,029,754.08 and 213,186.24 is: 319,775.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,511.36 : 1,029,754.08 = 213,186.24 : x
  2. Step 2: Convert to fraction form
    686,511.36/1,029,754.08 = 213,186.24/x
  3. Step 3: Cross multiply
    686,511.36x = 1,029,754.08 × 213,186.24
  4. Step 4: Simplify right side
    686,511.36x = 219,529,400,439.86
  5. Step 5: Solve for x
    x = 219,529,400,439.86/686,511.36
  6. Step 6: Final answer
    x = 319,775.34

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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.