Home / 1,581,979.12-2,183,120.20-856,810.32

Finding the Fourth Proportional to 1,581,979.12, 2,183,120.20 and 856,810.32

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Solution

The fourth proportional to 1,581,979.12, 2,183,120.20 and 856,810.32 is: 1,182,392.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581,979.12 : 2,183,120.20 = 856,810.32 : x
  2. Step 2: Convert to fraction form
    1,581,979.12/2,183,120.20 = 856,810.32/x
  3. Step 3: Cross multiply
    1,581,979.12x = 2,183,120.20 × 856,810.32
  4. Step 4: Simplify right side
    1,581,979.12x = 1,870,519,917,160.46
  5. Step 5: Solve for x
    x = 1,870,519,917,160.46/1,581,979.12
  6. Step 6: Final answer
    x = 1,182,392.29

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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.