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Finding the Fourth Proportional to 3,868,714.88, 5,338,664.88 and 2,149,820

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Solution

The fourth proportional to 3,868,714.88, 5,338,664.88 and 2,149,820 is: 2,966,661.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868,714.88 : 5,338,664.88 = 2,149,820 : x
  2. Step 2: Convert to fraction form
    3,868,714.88/5,338,664.88 = 2,149,820/x
  3. Step 3: Cross multiply
    3,868,714.88x = 5,338,664.88 × 2,149,820
  4. Step 4: Simplify right side
    3,868,714.88x = 11,477,168,532,321.60
  5. Step 5: Solve for x
    x = 11,477,168,532,321.60/3,868,714.88
  6. Step 6: Final answer
    x = 2,966,661.77

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1.5x scale

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.