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Finding the Fourth Proportional to 666,495.75, 919,764.75 and 364,689.75

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Solution

The fourth proportional to 666,495.75, 919,764.75 and 364,689.75 is: 503,272.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,495.75 : 919,764.75 = 364,689.75 : x
  2. Step 2: Convert to fraction form
    666,495.75/919,764.75 = 364,689.75/x
  3. Step 3: Cross multiply
    666,495.75x = 919,764.75 × 364,689.75
  4. Step 4: Simplify right side
    666,495.75x = 335,428,776,736.31
  5. Step 5: Solve for x
    x = 335,428,776,736.31/666,495.75
  6. Step 6: Final answer
    x = 503,272.19

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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.