Home / 919,562.75-1,379,542.64-279,916.50

Finding the Fourth Proportional to 919,562.75, 1,379,542.64 and 279,916.50

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Solution

The fourth proportional to 919,562.75, 1,379,542.64 and 279,916.50 is: 419,935.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,562.75 : 1,379,542.64 = 279,916.50 : x
  2. Step 2: Convert to fraction form
    919,562.75/1,379,542.64 = 279,916.50/x
  3. Step 3: Cross multiply
    919,562.75x = 1,379,542.64 × 279,916.50
  4. Step 4: Simplify right side
    919,562.75x = 386,156,745,989.98
  5. Step 5: Solve for x
    x = 386,156,745,989.98/919,562.75
  6. Step 6: Final answer
    x = 419,935.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.