Home / 786,020.40-1,179,030.60-253,558.80

Finding the Fourth Proportional to 786,020.40, 1,179,030.60 and 253,558.80

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Solution

The fourth proportional to 786,020.40, 1,179,030.60 and 253,558.80 is: 380,338.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,020.40 : 1,179,030.60 = 253,558.80 : x
  2. Step 2: Convert to fraction form
    786,020.40/1,179,030.60 = 253,558.80/x
  3. Step 3: Cross multiply
    786,020.40x = 1,179,030.60 × 253,558.80
  4. Step 4: Simplify right side
    786,020.40x = 298,953,584,099.28
  5. Step 5: Solve for x
    x = 298,953,584,099.28/786,020.40
  6. Step 6: Final answer
    x = 380,338.20

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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.