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Finding the Fourth Proportional to 831,600, 1,247,477.76 and 270,483.84

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Solution

The fourth proportional to 831,600, 1,247,477.76 and 270,483.84 is: 405,751.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,600 : 1,247,477.76 = 270,483.84 : x
  2. Step 2: Convert to fraction form
    831,600/1,247,477.76 = 270,483.84/x
  3. Step 3: Cross multiply
    831,600x = 1,247,477.76 × 270,483.84
  4. Step 4: Simplify right side
    831,600x = 337,422,574,839.40
  5. Step 5: Solve for x
    x = 337,422,574,839.40/831,600
  6. Step 6: Final answer
    x = 405,751.05

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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.