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Finding the Fourth Proportional to 666,039.54, 919,120.86 and 364,233.54

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Solution

The fourth proportional to 666,039.54, 919,120.86 and 364,233.54 is: 502,634.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,039.54 : 919,120.86 = 364,233.54 : x
  2. Step 2: Convert to fraction form
    666,039.54/919,120.86 = 364,233.54/x
  3. Step 3: Cross multiply
    666,039.54x = 919,120.86 × 364,233.54
  4. Step 4: Simplify right side
    666,039.54x = 334,774,644,525.64
  5. Step 5: Solve for x
    x = 334,774,644,525.64/666,039.54
  6. Step 6: Final answer
    x = 502,634.79

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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.