Home / 930,941.40-1,396,412.10-612,076.80

Finding the Fourth Proportional to 930,941.40, 1,396,412.10 and 612,076.80

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Solution

The fourth proportional to 930,941.40, 1,396,412.10 and 612,076.80 is: 918,115.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    930,941.40 : 1,396,412.10 = 612,076.80 : x
  2. Step 2: Convert to fraction form
    930,941.40/1,396,412.10 = 612,076.80/x
  3. Step 3: Cross multiply
    930,941.40x = 1,396,412.10 × 612,076.80
  4. Step 4: Simplify right side
    930,941.40x = 854,711,449,649.28
  5. Step 5: Solve for x
    x = 854,711,449,649.28/930,941.40
  6. Step 6: Final answer
    x = 918,115.20

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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.