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Finding the Fourth Proportional to 666,292.96, 919,481.40 and 360,369.64

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Solution

The fourth proportional to 666,292.96, 919,481.40 and 360,369.64 is: 497,308.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,292.96 : 919,481.40 = 360,369.64 : x
  2. Step 2: Convert to fraction form
    666,292.96/919,481.40 = 360,369.64/x
  3. Step 3: Cross multiply
    666,292.96x = 919,481.40 × 360,369.64
  4. Step 4: Simplify right side
    666,292.96x = 331,353,181,104.70
  5. Step 5: Solve for x
    x = 331,353,181,104.70/666,292.96
  6. Step 6: Final answer
    x = 497,308.54

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1.5x scale

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.