Home / 1,259,687.80-1,889,531.70-512,270.20

Finding the Fourth Proportional to 1,259,687.80, 1,889,531.70 and 512,270.20

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Solution

The fourth proportional to 1,259,687.80, 1,889,531.70 and 512,270.20 is: 768,405.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,687.80 : 1,889,531.70 = 512,270.20 : x
  2. Step 2: Convert to fraction form
    1,259,687.80/1,889,531.70 = 512,270.20/x
  3. Step 3: Cross multiply
    1,259,687.80x = 1,889,531.70 × 512,270.20
  4. Step 4: Simplify right side
    1,259,687.80x = 967,950,781,865.34
  5. Step 5: Solve for x
    x = 967,950,781,865.34/1,259,687.80
  6. Step 6: Final answer
    x = 768,405.30

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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.