Home / 686,448.66-1,029,661.96-213,134.48

Finding the Fourth Proportional to 686,448.66, 1,029,661.96 and 213,134.48

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Solution

The fourth proportional to 686,448.66, 1,029,661.96 and 213,134.48 is: 319,698.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,448.66 : 1,029,661.96 = 213,134.48 : x
  2. Step 2: Convert to fraction form
    686,448.66/1,029,661.96 = 213,134.48/x
  3. Step 3: Cross multiply
    686,448.66x = 1,029,661.96 × 213,134.48
  4. Step 4: Simplify right side
    686,448.66x = 219,456,466,420.38
  5. Step 5: Solve for x
    x = 219,456,466,420.38/686,448.66
  6. Step 6: Final answer
    x = 319,698.30

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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.