Home / 1,640,255.85-2,263,554.48-915,103.72

Finding the Fourth Proportional to 1,640,255.85, 2,263,554.48 and 915,103.72

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Solution

The fourth proportional to 1,640,255.85, 2,263,554.48 and 915,103.72 is: 1,262,843.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640,255.85 : 2,263,554.48 = 915,103.72 : x
  2. Step 2: Convert to fraction form
    1,640,255.85/2,263,554.48 = 915,103.72/x
  3. Step 3: Cross multiply
    1,640,255.85x = 2,263,554.48 × 915,103.72
  4. Step 4: Simplify right side
    1,640,255.85x = 2,071,387,125,070.67
  5. Step 5: Solve for x
    x = 2,071,387,125,070.67/1,640,255.85
  6. Step 6: Final answer
    x = 1,262,843.92

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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.