Home / 651,131.20-976,696.80-414,643.60

Finding the Fourth Proportional to 651,131.20, 976,696.80 and 414,643.60

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Solution

The fourth proportional to 651,131.20, 976,696.80 and 414,643.60 is: 621,965.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,131.20 : 976,696.80 = 414,643.60 : x
  2. Step 2: Convert to fraction form
    651,131.20/976,696.80 = 414,643.60/x
  3. Step 3: Cross multiply
    651,131.20x = 976,696.80 × 414,643.60
  4. Step 4: Simplify right side
    651,131.20x = 404,981,077,260.48
  5. Step 5: Solve for x
    x = 404,981,077,260.48/651,131.20
  6. Step 6: Final answer
    x = 621,965.40

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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.