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Finding the Fourth Proportional to 978,362.28, 1,467,529.77 and 339,131.34

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Solution

The fourth proportional to 978,362.28, 1,467,529.77 and 339,131.34 is: 508,692.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,362.28 : 1,467,529.77 = 339,131.34 : x
  2. Step 2: Convert to fraction form
    978,362.28/1,467,529.77 = 339,131.34/x
  3. Step 3: Cross multiply
    978,362.28x = 1,467,529.77 × 339,131.34
  4. Step 4: Simplify right side
    978,362.28x = 497,685,337,389.99
  5. Step 5: Solve for x
    x = 497,685,337,389.99/978,362.28
  6. Step 6: Final answer
    x = 508,692.28

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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.