Home / 753,188.68-1,039,396.36-409,021.60

Finding the Fourth Proportional to 753,188.68, 1,039,396.36 and 409,021.60

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Solution

The fourth proportional to 753,188.68, 1,039,396.36 and 409,021.60 is: 564,447.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,188.68 : 1,039,396.36 = 409,021.60 : x
  2. Step 2: Convert to fraction form
    753,188.68/1,039,396.36 = 409,021.60/x
  3. Step 3: Cross multiply
    753,188.68x = 1,039,396.36 × 409,021.60
  4. Step 4: Simplify right side
    753,188.68x = 425,135,562,201.38
  5. Step 5: Solve for x
    x = 425,135,562,201.38/753,188.68
  6. Step 6: Final answer
    x = 564,447.63

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.