Home / 815,038.40-1,222,557.60-215,998.40

Finding the Fourth Proportional to 815,038.40, 1,222,557.60 and 215,998.40

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Solution

The fourth proportional to 815,038.40, 1,222,557.60 and 215,998.40 is: 323,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,038.40 : 1,222,557.60 = 215,998.40 : x
  2. Step 2: Convert to fraction form
    815,038.40/1,222,557.60 = 215,998.40/x
  3. Step 3: Cross multiply
    815,038.40x = 1,222,557.60 × 215,998.40
  4. Step 4: Simplify right side
    815,038.40x = 264,070,485,507.84
  5. Step 5: Solve for x
    x = 264,070,485,507.84/815,038.40
  6. Step 6: Final answer
    x = 323,997.60

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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.