Home / 739,470.89-1,108,736.13-312,783.55

Finding the Fourth Proportional to 739,470.89, 1,108,736.13 and 312,783.55

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Solution

The fourth proportional to 739,470.89, 1,108,736.13 and 312,783.55 is: 468,976.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,470.89 : 1,108,736.13 = 312,783.55 : x
  2. Step 2: Convert to fraction form
    739,470.89/1,108,736.13 = 312,783.55/x
  3. Step 3: Cross multiply
    739,470.89x = 1,108,736.13 × 312,783.55
  4. Step 4: Simplify right side
    739,470.89x = 346,794,422,754.66
  5. Step 5: Solve for x
    x = 346,794,422,754.66/739,470.89
  6. Step 6: Final answer
    x = 468,976.44

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.