Home / 1,091,939.20-1,638,139.20-344,060.80

Finding the Fourth Proportional to 1,091,939.20, 1,638,139.20 and 344,060.80

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Solution

The fourth proportional to 1,091,939.20, 1,638,139.20 and 344,060.80 is: 516,163.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091,939.20 : 1,638,139.20 = 344,060.80 : x
  2. Step 2: Convert to fraction form
    1,091,939.20/1,638,139.20 = 344,060.80/x
  3. Step 3: Cross multiply
    1,091,939.20x = 1,638,139.20 × 344,060.80
  4. Step 4: Simplify right side
    1,091,939.20x = 563,619,483,663.36
  5. Step 5: Solve for x
    x = 563,619,483,663.36/1,091,939.20
  6. Step 6: Final answer
    x = 516,163.80

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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.