Home / 7,128,692.80-10,693,039.20-5,215,505.20

Finding the Fourth Proportional to 7,128,692.80, 10,693,039.20 and 5,215,505.20

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Solution

The fourth proportional to 7,128,692.80, 10,693,039.20 and 5,215,505.20 is: 7,823,257.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128,692.80 : 10,693,039.20 = 5,215,505.20 : x
  2. Step 2: Convert to fraction form
    7,128,692.80/10,693,039.20 = 5,215,505.20/x
  3. Step 3: Cross multiply
    7,128,692.80x = 10,693,039.20 × 5,215,505.20
  4. Step 4: Simplify right side
    7,128,692.80x = 55,769,601,551,403.84
  5. Step 5: Solve for x
    x = 55,769,601,551,403.84/7,128,692.80
  6. Step 6: Final answer
    x = 7,823,257.80

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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.