Home / 1,211,458.40-1,817,187.60-413,640.80

Finding the Fourth Proportional to 1,211,458.40, 1,817,187.60 and 413,640.80

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Solution

The fourth proportional to 1,211,458.40, 1,817,187.60 and 413,640.80 is: 620,461.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,458.40 : 1,817,187.60 = 413,640.80 : x
  2. Step 2: Convert to fraction form
    1,211,458.40/1,817,187.60 = 413,640.80/x
  3. Step 3: Cross multiply
    1,211,458.40x = 1,817,187.60 × 413,640.80
  4. Step 4: Simplify right side
    1,211,458.40x = 751,662,932,614.08
  5. Step 5: Solve for x
    x = 751,662,932,614.08/1,211,458.40
  6. Step 6: Final answer
    x = 620,461.20

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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.