Home / 1,997,755.90-2,756,228.53-1,137,707.21

Finding the Fourth Proportional to 1,997,755.90, 2,756,228.53 and 1,137,707.21

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Solution

The fourth proportional to 1,997,755.90, 2,756,228.53 and 1,137,707.21 is: 1,569,651.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,997,755.90 : 2,756,228.53 = 1,137,707.21 : x
  2. Step 2: Convert to fraction form
    1,997,755.90/2,756,228.53 = 1,137,707.21/x
  3. Step 3: Cross multiply
    1,997,755.90x = 2,756,228.53 × 1,137,707.21
  4. Step 4: Simplify right side
    1,997,755.90x = 3,135,781,070,988.70
  5. Step 5: Solve for x
    x = 3,135,781,070,988.70/1,997,755.90
  6. Step 6: Final answer
    x = 1,569,651.77

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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.