Home / 845,639.60-1,268,459.40-254,586.80

Finding the Fourth Proportional to 845,639.60, 1,268,459.40 and 254,586.80

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Solution

The fourth proportional to 845,639.60, 1,268,459.40 and 254,586.80 is: 381,880.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    845,639.60 : 1,268,459.40 = 254,586.80 : x
  2. Step 2: Convert to fraction form
    845,639.60/1,268,459.40 = 254,586.80/x
  3. Step 3: Cross multiply
    845,639.60x = 1,268,459.40 × 254,586.80
  4. Step 4: Simplify right side
    845,639.60x = 322,933,019,575.92
  5. Step 5: Solve for x
    x = 322,933,019,575.92/845,639.60
  6. Step 6: Final answer
    x = 381,880.20

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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.