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Finding the Fourth Proportional to 574,689, 792,297.81 and 402,375.18

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Solution

The fourth proportional to 574,689, 792,297.81 and 402,375.18 is: 554,736.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,689 : 792,297.81 = 402,375.18 : x
  2. Step 2: Convert to fraction form
    574,689/792,297.81 = 402,375.18/x
  3. Step 3: Cross multiply
    574,689x = 792,297.81 × 402,375.18
  4. Step 4: Simplify right side
    574,689x = 318,800,973,912.36
  5. Step 5: Solve for x
    x = 318,800,973,912.36/574,689
  6. Step 6: Final answer
    x = 554,736.52

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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.