Home / 828,017.40-1,242,026.10-259,403.26

Finding the Fourth Proportional to 828,017.40, 1,242,026.10 and 259,403.26

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Solution

The fourth proportional to 828,017.40, 1,242,026.10 and 259,403.26 is: 389,104.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,017.40 : 1,242,026.10 = 259,403.26 : x
  2. Step 2: Convert to fraction form
    828,017.40/1,242,026.10 = 259,403.26/x
  3. Step 3: Cross multiply
    828,017.40x = 1,242,026.10 × 259,403.26
  4. Step 4: Simplify right side
    828,017.40x = 322,185,619,345.09
  5. Step 5: Solve for x
    x = 322,185,619,345.09/828,017.40
  6. Step 6: Final answer
    x = 389,104.89

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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.