Home / 2,157,178.56-2,976,902.92-1,190,308.12

Finding the Fourth Proportional to 2,157,178.56, 2,976,902.92 and 1,190,308.12

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Solution

The fourth proportional to 2,157,178.56, 2,976,902.92 and 1,190,308.12 is: 1,642,623.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157,178.56 : 2,976,902.92 = 1,190,308.12 : x
  2. Step 2: Convert to fraction form
    2,157,178.56/2,976,902.92 = 1,190,308.12/x
  3. Step 3: Cross multiply
    2,157,178.56x = 2,976,902.92 × 1,190,308.12
  4. Step 4: Simplify right side
    2,157,178.56x = 3,543,431,718,127.71
  5. Step 5: Solve for x
    x = 3,543,431,718,127.71/2,157,178.56
  6. Step 6: Final answer
    x = 1,642,623.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.