Home / 1,188,580.08-1,640,230.96-644,714.52

Finding the Fourth Proportional to 1,188,580.08, 1,640,230.96 and 644,714.52

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Solution

The fourth proportional to 1,188,580.08, 1,640,230.96 and 644,714.52 is: 889,700.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,580.08 : 1,640,230.96 = 644,714.52 : x
  2. Step 2: Convert to fraction form
    1,188,580.08/1,640,230.96 = 644,714.52/x
  3. Step 3: Cross multiply
    1,188,580.08x = 1,640,230.96 × 644,714.52
  4. Step 4: Simplify right side
    1,188,580.08x = 1,057,480,716,065.54
  5. Step 5: Solve for x
    x = 1,057,480,716,065.54/1,188,580.08
  6. Step 6: Final answer
    x = 889,700.86

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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.