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Finding the Fourth Proportional to 480,692.75, 720,408.40 and 353,738.75

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Solution

The fourth proportional to 480,692.75, 720,408.40 and 353,738.75 is: 530,143.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,692.75 : 720,408.40 = 353,738.75 : x
  2. Step 2: Convert to fraction form
    480,692.75/720,408.40 = 353,738.75/x
  3. Step 3: Cross multiply
    480,692.75x = 720,408.40 × 353,738.75
  4. Step 4: Simplify right side
    480,692.75x = 254,836,362,419.11
  5. Step 5: Solve for x
    x = 254,836,362,419.11/480,692.75
  6. Step 6: Final answer
    x = 530,143.97

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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.