Home / 828,123.48-1,242,185.51-259,548.71

Finding the Fourth Proportional to 828,123.48, 1,242,185.51 and 259,548.71

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Solution

The fourth proportional to 828,123.48, 1,242,185.51 and 259,548.71 is: 389,323.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,123.48 : 1,242,185.51 = 259,548.71 : x
  2. Step 2: Convert to fraction form
    828,123.48/1,242,185.51 = 259,548.71/x
  3. Step 3: Cross multiply
    828,123.48x = 1,242,185.51 × 259,548.71
  4. Step 4: Simplify right side
    828,123.48x = 322,407,641,139.14
  5. Step 5: Solve for x
    x = 322,407,641,139.14/828,123.48
  6. Step 6: Final answer
    x = 389,323.15

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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.