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Finding the Fourth Proportional to 545,087.20, 816,853.20 and 401,814.40

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Solution

The fourth proportional to 545,087.20, 816,853.20 and 401,814.40 is: 602,148.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,087.20 : 816,853.20 = 401,814.40 : x
  2. Step 2: Convert to fraction form
    545,087.20/816,853.20 = 401,814.40/x
  3. Step 3: Cross multiply
    545,087.20x = 816,853.20 × 401,814.40
  4. Step 4: Simplify right side
    545,087.20x = 328,223,378,446.08
  5. Step 5: Solve for x
    x = 328,223,378,446.08/545,087.20
  6. Step 6: Final answer
    x = 602,148.39

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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.