Home / 12,305,770.40-18,458,655.60-3,784,999.70

Finding the Fourth Proportional to 12,305,770.40, 18,458,655.60 and 3,784,999.70

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Solution

The fourth proportional to 12,305,770.40, 18,458,655.60 and 3,784,999.70 is: 5,677,499.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,305,770.40 : 18,458,655.60 = 3,784,999.70 : x
  2. Step 2: Convert to fraction form
    12,305,770.40/18,458,655.60 = 3,784,999.70/x
  3. Step 3: Cross multiply
    12,305,770.40x = 18,458,655.60 × 3,784,999.70
  4. Step 4: Simplify right side
    12,305,770.40x = 69,866,005,908,403.33
  5. Step 5: Solve for x
    x = 69,866,005,908,403.33/12,305,770.40
  6. Step 6: Final answer
    x = 5,677,499.55

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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.