Home / 3,478,003.80-5,217,005.70-919,213.80

Finding the Fourth Proportional to 3,478,003.80, 5,217,005.70 and 919,213.80

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Solution

The fourth proportional to 3,478,003.80, 5,217,005.70 and 919,213.80 is: 1,378,820.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478,003.80 : 5,217,005.70 = 919,213.80 : x
  2. Step 2: Convert to fraction form
    3,478,003.80/5,217,005.70 = 919,213.80/x
  3. Step 3: Cross multiply
    3,478,003.80x = 5,217,005.70 × 919,213.80
  4. Step 4: Simplify right side
    3,478,003.80x = 4,795,543,634,118.66
  5. Step 5: Solve for x
    x = 4,795,543,634,118.66/3,478,003.80
  6. Step 6: Final answer
    x = 1,378,820.70

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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.