Home / 3,980,372-5,492,917.20-2,169,543.20

Finding the Fourth Proportional to 3,980,372, 5,492,917.20 and 2,169,543.20

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Solution

The fourth proportional to 3,980,372, 5,492,917.20 and 2,169,543.20 is: 2,993,971.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980,372 : 5,492,917.20 = 2,169,543.20 : x
  2. Step 2: Convert to fraction form
    3,980,372/5,492,917.20 = 2,169,543.20/x
  3. Step 3: Cross multiply
    3,980,372x = 5,492,917.20 × 2,169,543.20
  4. Step 4: Simplify right side
    3,980,372x = 11,917,121,159,423.04
  5. Step 5: Solve for x
    x = 11,917,121,159,423.04/3,980,372
  6. Step 6: Final answer
    x = 2,993,971.71

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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.