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Finding the Fourth Proportional to 666,713.56, 920,086.86 and 364,907.56

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Solution

The fourth proportional to 666,713.56, 920,086.86 and 364,907.56 is: 503,584.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,713.56 : 920,086.86 = 364,907.56 : x
  2. Step 2: Convert to fraction form
    666,713.56/920,086.86 = 364,907.56/x
  3. Step 3: Cross multiply
    666,713.56x = 920,086.86 × 364,907.56
  4. Step 4: Simplify right side
    666,713.56x = 335,746,651,070.66
  5. Step 5: Solve for x
    x = 335,746,651,070.66/666,713.56
  6. Step 6: Final answer
    x = 503,584.55

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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.