Home / 1,145,821.22-1,580,640.38-778,317.31

Finding the Fourth Proportional to 1,145,821.22, 1,580,640.38 and 778,317.31

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Solution

The fourth proportional to 1,145,821.22, 1,580,640.38 and 778,317.31 is: 1,073,675.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145,821.22 : 1,580,640.38 = 778,317.31 : x
  2. Step 2: Convert to fraction form
    1,145,821.22/1,580,640.38 = 778,317.31/x
  3. Step 3: Cross multiply
    1,145,821.22x = 1,580,640.38 × 778,317.31
  4. Step 4: Simplify right side
    1,145,821.22x = 1,230,239,768,638.98
  5. Step 5: Solve for x
    x = 1,230,239,768,638.98/1,145,821.22
  6. Step 6: Final answer
    x = 1,073,675.15

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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.