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Finding the Fourth Proportional to 867,665.20, 1,301,692.20 and 335,138.80

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Solution

The fourth proportional to 867,665.20, 1,301,692.20 and 335,138.80 is: 502,783.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,665.20 : 1,301,692.20 = 335,138.80 : x
  2. Step 2: Convert to fraction form
    867,665.20/1,301,692.20 = 335,138.80/x
  3. Step 3: Cross multiply
    867,665.20x = 1,301,692.20 × 335,138.80
  4. Step 4: Simplify right side
    867,665.20x = 436,247,561,877.36
  5. Step 5: Solve for x
    x = 436,247,561,877.36/867,665.20
  6. Step 6: Final answer
    x = 502,783.29

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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.