Home / 646,904.80-970,357.20-331,976.80

Finding the Fourth Proportional to 646,904.80, 970,357.20 and 331,976.80

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Solution

The fourth proportional to 646,904.80, 970,357.20 and 331,976.80 is: 497,965.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,904.80 : 970,357.20 = 331,976.80 : x
  2. Step 2: Convert to fraction form
    646,904.80/970,357.20 = 331,976.80/x
  3. Step 3: Cross multiply
    646,904.80x = 970,357.20 × 331,976.80
  4. Step 4: Simplify right side
    646,904.80x = 322,136,078,112.96
  5. Step 5: Solve for x
    x = 322,136,078,112.96/646,904.80
  6. Step 6: Final answer
    x = 497,965.20

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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.