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Finding the Fourth Proportional to 629,634.64, 868,870.08 and 343,148.32

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Solution

The fourth proportional to 629,634.64, 868,870.08 and 343,148.32 is: 473,530.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,634.64 : 868,870.08 = 343,148.32 : x
  2. Step 2: Convert to fraction form
    629,634.64/868,870.08 = 343,148.32/x
  3. Step 3: Cross multiply
    629,634.64x = 868,870.08 × 343,148.32
  4. Step 4: Simplify right side
    629,634.64x = 298,151,308,250.27
  5. Step 5: Solve for x
    x = 298,151,308,250.27/629,634.64
  6. Step 6: Final answer
    x = 473,530.66

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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.