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Finding the Fourth Proportional to 629,494.86, 868,675.66 and 357,561.88

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Solution

The fourth proportional to 629,494.86, 868,675.66 and 357,561.88 is: 493,419.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,494.86 : 868,675.66 = 357,561.88 : x
  2. Step 2: Convert to fraction form
    629,494.86/868,675.66 = 357,561.88/x
  3. Step 3: Cross multiply
    629,494.86x = 868,675.66 × 357,561.88
  4. Step 4: Simplify right side
    629,494.86x = 310,605,302,099.84
  5. Step 5: Solve for x
    x = 310,605,302,099.84/629,494.86
  6. Step 6: Final answer
    x = 493,419.92

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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.