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Finding the Fourth Proportional to 666,694.53, 920,031.39 and 360,764.19

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Solution

The fourth proportional to 666,694.53, 920,031.39 and 360,764.19 is: 497,850.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,694.53 : 920,031.39 = 360,764.19 : x
  2. Step 2: Convert to fraction form
    666,694.53/920,031.39 = 360,764.19/x
  3. Step 3: Cross multiply
    666,694.53x = 920,031.39 × 360,764.19
  4. Step 4: Simplify right side
    666,694.53x = 331,914,379,187.92
  5. Step 5: Solve for x
    x = 331,914,379,187.92/666,694.53
  6. Step 6: Final answer
    x = 497,850.76

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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.