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Finding the Fourth Proportional to 666,759.80, 920,131.46 and 360,836.23

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Solution

The fourth proportional to 666,759.80, 920,131.46 and 360,836.23 is: 497,955.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,759.80 : 920,131.46 = 360,836.23 : x
  2. Step 2: Convert to fraction form
    666,759.80/920,131.46 = 360,836.23/x
  3. Step 3: Cross multiply
    666,759.80x = 920,131.46 × 360,836.23
  4. Step 4: Simplify right side
    666,759.80x = 332,016,761,462.52
  5. Step 5: Solve for x
    x = 332,016,761,462.52/666,759.80
  6. Step 6: Final answer
    x = 497,955.58

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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.