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Finding the Fourth Proportional to 545,126.70, 816,912.45 and 401,853.90

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Solution

The fourth proportional to 545,126.70, 816,912.45 and 401,853.90 is: 602,207.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,126.70 : 816,912.45 = 401,853.90 : x
  2. Step 2: Convert to fraction form
    545,126.70/816,912.45 = 401,853.90/x
  3. Step 3: Cross multiply
    545,126.70x = 816,912.45 × 401,853.90
  4. Step 4: Simplify right side
    545,126.70x = 328,279,453,991.06
  5. Step 5: Solve for x
    x = 328,279,453,991.06/545,126.70
  6. Step 6: Final answer
    x = 602,207.62

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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.