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Finding the Fourth Proportional to 679,227.83, 937,314.64 and 388,829.60

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Solution

The fourth proportional to 679,227.83, 937,314.64 and 388,829.60 is: 536,573.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,227.83 : 937,314.64 = 388,829.60 : x
  2. Step 2: Convert to fraction form
    679,227.83/937,314.64 = 388,829.60/x
  3. Step 3: Cross multiply
    679,227.83x = 937,314.64 × 388,829.60
  4. Step 4: Simplify right side
    679,227.83x = 364,455,669,914.62
  5. Step 5: Solve for x
    x = 364,455,669,914.62/679,227.83
  6. Step 6: Final answer
    x = 536,573.52

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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.