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Finding the Fourth Proportional to 551,730.57, 761,458.98 and 310,013.61

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Solution

The fourth proportional to 551,730.57, 761,458.98 and 310,013.61 is: 427,858.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,730.57 : 761,458.98 = 310,013.61 : x
  2. Step 2: Convert to fraction form
    551,730.57/761,458.98 = 310,013.61/x
  3. Step 3: Cross multiply
    551,730.57x = 761,458.98 × 310,013.61
  4. Step 4: Simplify right side
    551,730.57x = 236,062,647,256.72
  5. Step 5: Solve for x
    x = 236,062,647,256.72/551,730.57
  6. Step 6: Final answer
    x = 427,858.56

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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.