Home / 1,107,902.20-1,661,853.30-685,809.40

Finding the Fourth Proportional to 1,107,902.20, 1,661,853.30 and 685,809.40

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Solution

The fourth proportional to 1,107,902.20, 1,661,853.30 and 685,809.40 is: 1,028,714.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107,902.20 : 1,661,853.30 = 685,809.40 : x
  2. Step 2: Convert to fraction form
    1,107,902.20/1,661,853.30 = 685,809.40/x
  3. Step 3: Cross multiply
    1,107,902.20x = 1,661,853.30 × 685,809.40
  4. Step 4: Simplify right side
    1,107,902.20x = 1,139,714,614,561.02
  5. Step 5: Solve for x
    x = 1,139,714,614,561.02/1,107,902.20
  6. Step 6: Final answer
    x = 1,028,714.10

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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.