Home / 919,563.13-1,379,543.22-279,916.88

Finding the Fourth Proportional to 919,563.13, 1,379,543.22 and 279,916.88

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Solution

The fourth proportional to 919,563.13, 1,379,543.22 and 279,916.88 is: 419,935.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,563.13 : 1,379,543.22 = 279,916.88 : x
  2. Step 2: Convert to fraction form
    919,563.13/1,379,543.22 = 279,916.88/x
  3. Step 3: Cross multiply
    919,563.13x = 1,379,543.22 × 279,916.88
  4. Step 4: Simplify right side
    919,563.13x = 386,157,433,967.55
  5. Step 5: Solve for x
    x = 386,157,433,967.55/919,563.13
  6. Step 6: Final answer
    x = 419,935.75

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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.