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Finding the Fourth Proportional to 545,119.20, 816,901.20 and 401,846.40

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Solution

The fourth proportional to 545,119.20, 816,901.20 and 401,846.40 is: 602,196.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,119.20 : 816,901.20 = 401,846.40 : x
  2. Step 2: Convert to fraction form
    545,119.20/816,901.20 = 401,846.40/x
  3. Step 3: Cross multiply
    545,119.20x = 816,901.20 × 401,846.40
  4. Step 4: Simplify right side
    545,119.20x = 328,268,806,375.68
  5. Step 5: Solve for x
    x = 328,268,806,375.68/545,119.20
  6. Step 6: Final answer
    x = 602,196.38

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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.