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Finding the Fourth Proportional to 681,755.32, 940,779.96 and 375,815.80

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Solution

The fourth proportional to 681,755.32, 940,779.96 and 375,815.80 is: 518,602.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,755.32 : 940,779.96 = 375,815.80 : x
  2. Step 2: Convert to fraction form
    681,755.32/940,779.96 = 375,815.80/x
  3. Step 3: Cross multiply
    681,755.32x = 940,779.96 × 375,815.80
  4. Step 4: Simplify right side
    681,755.32x = 353,559,973,291.37
  5. Step 5: Solve for x
    x = 353,559,973,291.37/681,755.32
  6. Step 6: Final answer
    x = 518,602.44

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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.