Home / 828,483.96-1,242,939.78-378,990.12

Finding the Fourth Proportional to 828,483.96, 1,242,939.78 and 378,990.12

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Solution

The fourth proportional to 828,483.96, 1,242,939.78 and 378,990.12 is: 568,583.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,483.96 : 1,242,939.78 = 378,990.12 : x
  2. Step 2: Convert to fraction form
    828,483.96/1,242,939.78 = 378,990.12/x
  3. Step 3: Cross multiply
    828,483.96x = 1,242,939.78 × 378,990.12
  4. Step 4: Simplify right side
    828,483.96x = 471,061,896,374.97
  5. Step 5: Solve for x
    x = 471,061,896,374.97/828,483.96
  6. Step 6: Final answer
    x = 568,583.00

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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.