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Finding the Fourth Proportional to 603,342.45, 832,638.75 and 345,300.40

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Solution

The fourth proportional to 603,342.45, 832,638.75 and 345,300.40 is: 476,529.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,342.45 : 832,638.75 = 345,300.40 : x
  2. Step 2: Convert to fraction form
    603,342.45/832,638.75 = 345,300.40/x
  3. Step 3: Cross multiply
    603,342.45x = 832,638.75 × 345,300.40
  4. Step 4: Simplify right side
    603,342.45x = 287,510,489,463.99
  5. Step 5: Solve for x
    x = 287,510,489,463.99/603,342.45
  6. Step 6: Final answer
    x = 476,529.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.