Home / 919,712.15-1,378,640.84-578,399.50

Finding the Fourth Proportional to 919,712.15, 1,378,640.84 and 578,399.50

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Solution

The fourth proportional to 919,712.15, 1,378,640.84 and 578,399.50 is: 867,016.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,712.15 : 1,378,640.84 = 578,399.50 : x
  2. Step 2: Convert to fraction form
    919,712.15/1,378,640.84 = 578,399.50/x
  3. Step 3: Cross multiply
    919,712.15x = 1,378,640.84 × 578,399.50
  4. Step 4: Simplify right side
    919,712.15x = 797,405,174,620.38
  5. Step 5: Solve for x
    x = 797,405,174,620.38/919,712.15
  6. Step 6: Final answer
    x = 867,016.02

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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.