Home / 1,990,689.81-2,747,118.96-1,107,605.86

Finding the Fourth Proportional to 1,990,689.81, 2,747,118.96 and 1,107,605.86

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Solution

The fourth proportional to 1,990,689.81, 2,747,118.96 and 1,107,605.86 is: 1,528,477.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990,689.81 : 2,747,118.96 = 1,107,605.86 : x
  2. Step 2: Convert to fraction form
    1,990,689.81/2,747,118.96 = 1,107,605.86/x
  3. Step 3: Cross multiply
    1,990,689.81x = 2,747,118.96 × 1,107,605.86
  4. Step 4: Simplify right side
    1,990,689.81x = 3,042,725,058,213.11
  5. Step 5: Solve for x
    x = 3,042,725,058,213.11/1,990,689.81
  6. Step 6: Final answer
    x = 1,528,477.74

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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.