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Finding the Fourth Proportional to 641,392.48, 961,804.32 and 341,817.22

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Solution

The fourth proportional to 641,392.48, 961,804.32 and 341,817.22 is: 512,574.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,392.48 : 961,804.32 = 341,817.22 : x
  2. Step 2: Convert to fraction form
    641,392.48/961,804.32 = 341,817.22/x
  3. Step 3: Cross multiply
    641,392.48x = 961,804.32 × 341,817.22
  4. Step 4: Simplify right side
    641,392.48x = 328,761,278,846.39
  5. Step 5: Solve for x
    x = 328,761,278,846.39/641,392.48
  6. Step 6: Final answer
    x = 512,574.26

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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.