Home / 3,502,420.80-5,253,242.40-978,331.20

Finding the Fourth Proportional to 3,502,420.80, 5,253,242.40 and 978,331.20

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Solution

The fourth proportional to 3,502,420.80, 5,253,242.40 and 978,331.20 is: 1,467,388.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,502,420.80 : 5,253,242.40 = 978,331.20 : x
  2. Step 2: Convert to fraction form
    3,502,420.80/5,253,242.40 = 978,331.20/x
  3. Step 3: Cross multiply
    3,502,420.80x = 5,253,242.40 × 978,331.20
  4. Step 4: Simplify right side
    3,502,420.80x = 5,139,410,941,082.88
  5. Step 5: Solve for x
    x = 5,139,410,941,082.88/3,502,420.80
  6. Step 6: Final answer
    x = 1,467,388.20

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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.