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Finding the Fourth Proportional to 666,539.86, 919,822.52 and 360,615.26

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Solution

The fourth proportional to 666,539.86, 919,822.52 and 360,615.26 is: 497,647.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,539.86 : 919,822.52 = 360,615.26 : x
  2. Step 2: Convert to fraction form
    666,539.86/919,822.52 = 360,615.26/x
  3. Step 3: Cross multiply
    666,539.86x = 919,822.52 × 360,615.26
  4. Step 4: Simplify right side
    666,539.86x = 331,702,037,203.66
  5. Step 5: Solve for x
    x = 331,702,037,203.66/666,539.86
  6. Step 6: Final answer
    x = 497,647.71

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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.