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Finding the Fourth Proportional to 629,655.68, 868,925.76 and 343,176

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Solution

The fourth proportional to 629,655.68, 868,925.76 and 343,176 is: 473,583.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,655.68 : 868,925.76 = 343,176 : x
  2. Step 2: Convert to fraction form
    629,655.68/868,925.76 = 343,176/x
  3. Step 3: Cross multiply
    629,655.68x = 868,925.76 × 343,176
  4. Step 4: Simplify right side
    629,655.68x = 298,194,466,613.76
  5. Step 5: Solve for x
    x = 298,194,466,613.76/629,655.68
  6. Step 6: Final answer
    x = 473,583.38

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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.