Home / 919,079.80-1,378,619.70-665,169.10

Finding the Fourth Proportional to 919,079.80, 1,378,619.70 and 665,169.10

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Solution

The fourth proportional to 919,079.80, 1,378,619.70 and 665,169.10 is: 997,753.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,079.80 : 1,378,619.70 = 665,169.10 : x
  2. Step 2: Convert to fraction form
    919,079.80/1,378,619.70 = 665,169.10/x
  3. Step 3: Cross multiply
    919,079.80x = 1,378,619.70 × 665,169.10
  4. Step 4: Simplify right side
    919,079.80x = 917,015,225,091.27
  5. Step 5: Solve for x
    x = 917,015,225,091.27/919,079.80
  6. Step 6: Final answer
    x = 997,753.65

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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.