Home / 6,642,805.20-9,964,207.80-2,155,081.20

Finding the Fourth Proportional to 6,642,805.20, 9,964,207.80 and 2,155,081.20

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Solution

The fourth proportional to 6,642,805.20, 9,964,207.80 and 2,155,081.20 is: 3,232,621.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642,805.20 : 9,964,207.80 = 2,155,081.20 : x
  2. Step 2: Convert to fraction form
    6,642,805.20/9,964,207.80 = 2,155,081.20/x
  3. Step 3: Cross multiply
    6,642,805.20x = 9,964,207.80 × 2,155,081.20
  4. Step 4: Simplify right side
    6,642,805.20x = 21,473,676,902,673.36
  5. Step 5: Solve for x
    x = 21,473,676,902,673.36/6,642,805.20
  6. Step 6: Final answer
    x = 3,232,621.80

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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.