Home / 691,244.40-1,036,866.60-407,809.20

Finding the Fourth Proportional to 691,244.40, 1,036,866.60 and 407,809.20

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Solution

The fourth proportional to 691,244.40, 1,036,866.60 and 407,809.20 is: 611,713.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,244.40 : 1,036,866.60 = 407,809.20 : x
  2. Step 2: Convert to fraction form
    691,244.40/1,036,866.60 = 407,809.20/x
  3. Step 3: Cross multiply
    691,244.40x = 1,036,866.60 × 407,809.20
  4. Step 4: Simplify right side
    691,244.40x = 422,843,738,652.72
  5. Step 5: Solve for x
    x = 422,843,738,652.72/691,244.40
  6. Step 6: Final answer
    x = 611,713.80

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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.