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Finding the Fourth Proportional to 666,460.46, 919,713.41 and 360,536.75

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Solution

The fourth proportional to 666,460.46, 919,713.41 and 360,536.75 is: 497,539.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,460.46 : 919,713.41 = 360,536.75 : x
  2. Step 2: Convert to fraction form
    666,460.46/919,713.41 = 360,536.75/x
  3. Step 3: Cross multiply
    666,460.46x = 919,713.41 × 360,536.75
  4. Step 4: Simplify right side
    666,460.46x = 331,590,478,318.31
  5. Step 5: Solve for x
    x = 331,590,478,318.31/666,460.46
  6. Step 6: Final answer
    x = 497,539.61

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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.