Home / 858,179.82-1,185,712.11-678,271.26

Finding the Fourth Proportional to 858,179.82, 1,185,712.11 and 678,271.26

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Solution

The fourth proportional to 858,179.82, 1,185,712.11 and 678,271.26 is: 937,139.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,179.82 : 1,185,712.11 = 678,271.26 : x
  2. Step 2: Convert to fraction form
    858,179.82/1,185,712.11 = 678,271.26/x
  3. Step 3: Cross multiply
    858,179.82x = 1,185,712.11 × 678,271.26
  4. Step 4: Simplify right side
    858,179.82x = 804,234,446,846.96
  5. Step 5: Solve for x
    x = 804,234,446,846.96/858,179.82
  6. Step 6: Final answer
    x = 937,139.78

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1.5x scale

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.