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Finding the Fourth Proportional to 629,492.64, 868,699.50 and 343,012.38

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Solution

The fourth proportional to 629,492.64, 868,699.50 and 343,012.38 is: 473,356.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,492.64 : 868,699.50 = 343,012.38 : x
  2. Step 2: Convert to fraction form
    629,492.64/868,699.50 = 343,012.38/x
  3. Step 3: Cross multiply
    629,492.64x = 868,699.50 × 343,012.38
  4. Step 4: Simplify right side
    629,492.64x = 297,974,682,999.81
  5. Step 5: Solve for x
    x = 297,974,682,999.81/629,492.64
  6. Step 6: Final answer
    x = 473,356.90

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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.