Home / 919,857.50-1,269,422.79-517,449.50

Finding the Fourth Proportional to 919,857.50, 1,269,422.79 and 517,449.50

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Solution

The fourth proportional to 919,857.50, 1,269,422.79 and 517,449.50 is: 714,091.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,857.50 : 1,269,422.79 = 517,449.50 : x
  2. Step 2: Convert to fraction form
    919,857.50/1,269,422.79 = 517,449.50/x
  3. Step 3: Cross multiply
    919,857.50x = 1,269,422.79 × 517,449.50
  4. Step 4: Simplify right side
    919,857.50x = 656,862,187,974.11
  5. Step 5: Solve for x
    x = 656,862,187,974.11/919,857.50
  6. Step 6: Final answer
    x = 714,091.25

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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.