Home / 1,380,137.34-2,070,087.03-840,253.80

Finding the Fourth Proportional to 1,380,137.34, 2,070,087.03 and 840,253.80

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Solution

The fourth proportional to 1,380,137.34, 2,070,087.03 and 840,253.80 is: 1,260,308.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,137.34 : 2,070,087.03 = 840,253.80 : x
  2. Step 2: Convert to fraction form
    1,380,137.34/2,070,087.03 = 840,253.80/x
  3. Step 3: Cross multiply
    1,380,137.34x = 2,070,087.03 × 840,253.80
  4. Step 4: Simplify right side
    1,380,137.34x = 1,739,398,493,288.21
  5. Step 5: Solve for x
    x = 1,739,398,493,288.21/1,380,137.34
  6. Step 6: Final answer
    x = 1,260,308.26

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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.