Home / 1,115,976.63-1,540,190.21-657,133.90

Finding the Fourth Proportional to 1,115,976.63, 1,540,190.21 and 657,133.90

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Solution

The fourth proportional to 1,115,976.63, 1,540,190.21 and 657,133.90 is: 906,928.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,976.63 : 1,540,190.21 = 657,133.90 : x
  2. Step 2: Convert to fraction form
    1,115,976.63/1,540,190.21 = 657,133.90/x
  3. Step 3: Cross multiply
    1,115,976.63x = 1,540,190.21 × 657,133.90
  4. Step 4: Simplify right side
    1,115,976.63x = 1,012,111,199,439.12
  5. Step 5: Solve for x
    x = 1,012,111,199,439.12/1,115,976.63
  6. Step 6: Final answer
    x = 906,928.67

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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.