Home / 1,081,555.11-1,621,457.82-660,688.83

Finding the Fourth Proportional to 1,081,555.11, 1,621,457.82 and 660,688.83

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Solution

The fourth proportional to 1,081,555.11, 1,621,457.82 and 660,688.83 is: 990,498.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081,555.11 : 1,621,457.82 = 660,688.83 : x
  2. Step 2: Convert to fraction form
    1,081,555.11/1,621,457.82 = 660,688.83/x
  3. Step 3: Cross multiply
    1,081,555.11x = 1,621,457.82 × 660,688.83
  4. Step 4: Simplify right side
    1,081,555.11x = 1,071,279,069,990.15
  5. Step 5: Solve for x
    x = 1,071,279,069,990.15/1,081,555.11
  6. Step 6: Final answer
    x = 990,498.83

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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.