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Finding the Fourth Proportional to 666,537.86, 919,819.76 and 360,613.26

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Solution

The fourth proportional to 666,537.86, 919,819.76 and 360,613.26 is: 497,644.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,537.86 : 919,819.76 = 360,613.26 : x
  2. Step 2: Convert to fraction form
    666,537.86/919,819.76 = 360,613.26/x
  3. Step 3: Cross multiply
    666,537.86x = 919,819.76 × 360,613.26
  4. Step 4: Simplify right side
    666,537.86x = 331,699,202,266.02
  5. Step 5: Solve for x
    x = 331,699,202,266.02/666,537.86
  6. Step 6: Final answer
    x = 497,644.95

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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.