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Finding the Fourth Proportional to 623,843.75, 860,988.62 and 351,967.43

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Solution

The fourth proportional to 623,843.75, 860,988.62 and 351,967.43 is: 485,762.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,843.75 : 860,988.62 = 351,967.43 : x
  2. Step 2: Convert to fraction form
    623,843.75/860,988.62 = 351,967.43/x
  3. Step 3: Cross multiply
    623,843.75x = 860,988.62 × 351,967.43
  4. Step 4: Simplify right side
    623,843.75x = 303,039,950,080.81
  5. Step 5: Solve for x
    x = 303,039,950,080.81/623,843.75
  6. Step 6: Final answer
    x = 485,762.58

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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.