Home / 678,168.65-1,017,221.09-251,789.31

Finding the Fourth Proportional to 678,168.65, 1,017,221.09 and 251,789.31

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Solution

The fourth proportional to 678,168.65, 1,017,221.09 and 251,789.31 is: 377,672.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,168.65 : 1,017,221.09 = 251,789.31 : x
  2. Step 2: Convert to fraction form
    678,168.65/1,017,221.09 = 251,789.31/x
  3. Step 3: Cross multiply
    678,168.65x = 1,017,221.09 × 251,789.31
  4. Step 4: Simplify right side
    678,168.65x = 256,125,395,109.60
  5. Step 5: Solve for x
    x = 256,125,395,109.60/678,168.65
  6. Step 6: Final answer
    x = 377,672.12

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1.5x scale

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.