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Finding the Fourth Proportional to 1,296,375, 1,788,997.64 and 715,598.32

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Solution

The fourth proportional to 1,296,375, 1,788,997.64 and 715,598.32 is: 987,525.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,375 : 1,788,997.64 = 715,598.32 : x
  2. Step 2: Convert to fraction form
    1,296,375/1,788,997.64 = 715,598.32/x
  3. Step 3: Cross multiply
    1,296,375x = 1,788,997.64 × 715,598.32
  4. Step 4: Simplify right side
    1,296,375x = 1,280,203,705,667.96
  5. Step 5: Solve for x
    x = 1,280,203,705,667.96/1,296,375
  6. Step 6: Final answer
    x = 987,525.76

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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.