Home / 1,209,991.50-1,669,758.84-666,122.94

Finding the Fourth Proportional to 1,209,991.50, 1,669,758.84 and 666,122.94

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Solution

The fourth proportional to 1,209,991.50, 1,669,758.84 and 666,122.94 is: 919,233.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,991.50 : 1,669,758.84 = 666,122.94 : x
  2. Step 2: Convert to fraction form
    1,209,991.50/1,669,758.84 = 666,122.94/x
  3. Step 3: Cross multiply
    1,209,991.50x = 1,669,758.84 × 666,122.94
  4. Step 4: Simplify right side
    1,209,991.50x = 1,112,264,667,591.79
  5. Step 5: Solve for x
    x = 1,112,264,667,591.79/1,209,991.50
  6. Step 6: Final answer
    x = 919,233.46

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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.