Home / 828,456.50-1,242,699.88-259,824.90

Finding the Fourth Proportional to 828,456.50, 1,242,699.88 and 259,824.90

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Solution

The fourth proportional to 828,456.50, 1,242,699.88 and 259,824.90 is: 389,742.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,456.50 : 1,242,699.88 = 259,824.90 : x
  2. Step 2: Convert to fraction form
    828,456.50/1,242,699.88 = 259,824.90/x
  3. Step 3: Cross multiply
    828,456.50x = 1,242,699.88 × 259,824.90
  4. Step 4: Simplify right side
    828,456.50x = 322,884,372,051.01
  5. Step 5: Solve for x
    x = 322,884,372,051.01/828,456.50
  6. Step 6: Final answer
    x = 389,742.10

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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.