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Finding the Fourth Proportional to 1,140,573.72, 1,573,739.82 and 681,619.44

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Solution

The fourth proportional to 1,140,573.72, 1,573,739.82 and 681,619.44 is: 940,484.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,140,573.72 : 1,573,739.82 = 681,619.44 : x
  2. Step 2: Convert to fraction form
    1,140,573.72/1,573,739.82 = 681,619.44/x
  3. Step 3: Cross multiply
    1,140,573.72x = 1,573,739.82 × 681,619.44
  4. Step 4: Simplify right side
    1,140,573.72x = 1,072,691,654,814.10
  5. Step 5: Solve for x
    x = 1,072,691,654,814.10/1,140,573.72
  6. Step 6: Final answer
    x = 940,484.28

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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.