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Finding the Fourth Proportional to 545,111.20, 816,111.60 and 482,903.20

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Solution

The fourth proportional to 545,111.20, 816,111.60 and 482,903.20 is: 722,977.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,111.20 : 816,111.60 = 482,903.20 : x
  2. Step 2: Convert to fraction form
    545,111.20/816,111.60 = 482,903.20/x
  3. Step 3: Cross multiply
    545,111.20x = 816,111.60 × 482,903.20
  4. Step 4: Simplify right side
    545,111.20x = 394,102,903,197.12
  5. Step 5: Solve for x
    x = 394,102,903,197.12/545,111.20
  6. Step 6: Final answer
    x = 722,977.08

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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.