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Finding the Fourth Proportional to 617,671.41, 852,265.36 and 388,095.69

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Solution

The fourth proportional to 617,671.41, 852,265.36 and 388,095.69 is: 535,495.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,671.41 : 852,265.36 = 388,095.69 : x
  2. Step 2: Convert to fraction form
    617,671.41/852,265.36 = 388,095.69/x
  3. Step 3: Cross multiply
    617,671.41x = 852,265.36 × 388,095.69
  4. Step 4: Simplify right side
    617,671.41x = 330,760,514,112.72
  5. Step 5: Solve for x
    x = 330,760,514,112.72/617,671.41
  6. Step 6: Final answer
    x = 535,495.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.