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Finding the Fourth Proportional to 624,709.29, 861,950.54 and 379,689.77

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Solution

The fourth proportional to 624,709.29, 861,950.54 and 379,689.77 is: 523,881.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,709.29 : 861,950.54 = 379,689.77 : x
  2. Step 2: Convert to fraction form
    624,709.29/861,950.54 = 379,689.77/x
  3. Step 3: Cross multiply
    624,709.29x = 861,950.54 × 379,689.77
  4. Step 4: Simplify right side
    624,709.29x = 327,273,796,075.77
  5. Step 5: Solve for x
    x = 327,273,796,075.77/624,709.29
  6. Step 6: Final answer
    x = 523,881.75

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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.