Home / 851,685.78-1,277,478.27-319,162.26

Finding the Fourth Proportional to 851,685.78, 1,277,478.27 and 319,162.26

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Solution

The fourth proportional to 851,685.78, 1,277,478.27 and 319,162.26 is: 478,724.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,685.78 : 1,277,478.27 = 319,162.26 : x
  2. Step 2: Convert to fraction form
    851,685.78/1,277,478.27 = 319,162.26/x
  3. Step 3: Cross multiply
    851,685.78x = 1,277,478.27 × 319,162.26
  4. Step 4: Simplify right side
    851,685.78x = 407,722,851,754.09
  5. Step 5: Solve for x
    x = 407,722,851,754.09/851,685.78
  6. Step 6: Final answer
    x = 478,724.50

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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.